Photographing optical lens system, image capturing unit and electronic device

ABSTRACT

A photographing optical lens system includes seven lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the sixth lens element is concave in a paraxial region thereof, and the image-side surface of the sixth lens element is convex in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the photographing optical lens system has at least one inflection.

RELATED APPLICATIONS

This application claims priority to Taiwan Application 109143918, filedon Dec. 11, 2020, which is incorporated by reference herein in itsentirety.

BACKGROUND Technical Field

The present disclosure relates to a photographing optical lens system,an image capturing unit and an electronic device, more particularly to aphotographing optical lens system and an image capturing unit applicableto an electronic device.

Description of Related Art

With the development of semiconductor manufacturing technology, theperformance of image sensors has improved, and the pixel size thereofhas been scaled down. Therefore, featuring high image quality becomesone of the indispensable features of an optical system nowadays.

Furthermore, due to the rapid changes in technology, electronic devicesequipped with optical systems are trending towards multi-functionalityfor various applications, and therefore the functionality requirementsfor the optical systems have been increasing. However, it is difficultfor a conventional optical system to obtain a balance among therequirements such as high image quality, low sensitivity, a properaperture size, miniaturization and a desirable field of view.

SUMMARY

According to one aspect of the present disclosure, a photographingoptical lens system includes seven lens elements. The seven lenselements are, in order from an object side to an image side along anoptical path, a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element, a sixth lenselement and a seventh lens element. Each of the seven lens elements hasan object-side surface facing toward the object side and an image-sidesurface facing toward the image side.

The object-side surface of the first lens element is concave in aparaxial region thereof. The sixth lens element has positive refractivepower. The object-side surface of the sixth lens element is concave in aparaxial region thereof. The image-side surface of the sixth lenselement is convex in a paraxial region thereof. At least one of theobject-side surface and the image-side surface of at least one lenselement of the photographing optical lens system has at least oneinflection point.

When an Abbe number of the third lens element is V3, an Abbe number ofthe fourth lens element is V4, an Abbe number of the fifth lens elementis V5, an axial distance between the object-side surface of the firstlens element and an image surface is TL, an entrance pupil diameter ofthe photographing optical lens system is EPD, and a maximum image heightof the photographing optical lens system is ImgH, the followingconditions are satisfied:

0.30<(V3+V5)/V4<1.2;

1.0<TL/EPD<6.0; and

0.80<TL/ImgH<1.8.

According to another aspect of the present disclosure, a photographingoptical lens system includes seven lens elements. The seven lenselements are, in order from an object side to an image side along anoptical path, a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element, a sixth lenselement and a seventh lens element. Each of the seven lens elements hasan object-side surface facing toward the object side and an image-sidesurface facing toward the image side.

The object-side surface of the first lens element is concave in aparaxial region thereof. The image-side surface of the first lenselement is convex in a paraxial region thereof. The sixth lens elementhas positive refractive power. The object-side surface of the sixth lenselement is concave in a paraxial region thereof. The image-side surfaceof the sixth lens element is convex in a paraxial region thereof. Theimage-side surface of the seventh lens element is concave in a paraxialregion thereof. At least one of the object-side surface and theimage-side surface of at least one lens element of the photographingoptical lens system has at least one inflection point.

When an Abbe number of the third lens element is V3, an Abbe number ofthe fourth lens element is V4, an Abbe number of the fifth lens elementis V5, an axial distance between an object-side surface of the firstlens element and an image surface is TL, and an entrance pupil diameterof the photographing optical lens system is EPD, the followingconditions are satisfied:

0.30<(V3+V5)/V4<1.2; and

1.0<TL/EPD<6.0.

According to another aspect of the present disclosure, a photographingoptical lens system includes seven lens elements. The seven lenselements are, in order from an object side to an image side along anoptical path, a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element, a sixth lenselement and a seventh lens element. Each of the seven lens elements hasan object-side surface facing toward the object side and an image-sidesurface facing toward the image side.

The object-side surface of the second lens element is convex in aparaxial region thereof. The image-side surface of the second lenselement is concave in a paraxial region thereof. The image-side surfaceof the fourth lens element is convex in a paraxial region thereof. Theobject-side surface of the sixth lens element is concave in a paraxialregion thereof. The image-side surface of the sixth lens element isconvex in a paraxial region thereof. The seventh lens element hasnegative refractive power. At least one of the object-side surface andthe image-side surface of at least one lens element of the photographingoptical lens system has at least one inflection point.

When an Abbe number of the third lens element is V3, an Abbe number ofthe fourth lens element is V4, an Abbe number of the fifth lens elementis V5, a central thickness of the sixth lens element is CT6, a centralthickness of the seventh lens element is CT7, an axial distance betweenthe sixth lens element and the seventh lens element is T67, a focallength of the first lens element is f1, and a focal length of the fourthlens element is f4, the following conditions are satisfied:

0.40<(V3+V5)/V4<1.0;

1.5<(CT6+CT7)/T67<13; and

2.2<|f1/f4|.

According to another aspect of the present disclosure, an imagecapturing unit includes one of the aforementioned photographing opticallens systems and an image sensor, wherein the image sensor is disposedon the image surface of the photographing optical lens system.

According to another aspect of the present disclosure, an electronicdevice includes the aforementioned image capturing unit.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be better understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 1stembodiment;

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 2ndembodiment;

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 3rdembodiment;

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 4thembodiment;

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 5thembodiment;

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 6thembodiment;

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 7thembodiment;

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 8thembodiment;

FIG. 17 is a perspective view of an image capturing unit according tothe 9th embodiment of the present disclosure;

FIG. 18 is one perspective view of an electronic device according to the10th embodiment of the present disclosure;

FIG. 19 is another perspective view of the electronic device in FIG. 18;

FIG. 20 is a block diagram of the electronic device in FIG. 18;

FIG. 21 is one perspective view of an electronic device according to the11th embodiment of the present disclosure;

FIG. 22 is one perspective view of an electronic device according to the12th embodiment of the present disclosure;

FIG. 23 shows a schematic view of Y11, Yc11, Y12, Yc12, Y71, Yc71, Y72,Yc72, and inflection points and critical points of lens elementsaccording to the 1st embodiment of the present disclosure;

FIG. 24 shows a schematic view of a configuration of a light-foldingelement in an imaging lens assembly according to one embodiment of thepresent disclosure;

FIG. 25 shows a schematic view of another configuration of alight-folding element in an imaging lens assembly according to oneembodiment of the present disclosure; and

FIG. 26 shows a schematic view of a configuration of two light-foldingelements in an imaging lens assembly according to one embodiment of thepresent disclosure.

DETAILED DESCRIPTION

A photographing optical lens system includes seven lens elements. Theseven lens elements are, in order from an object side to an image sidealong an optical path, a first lens element, a second lens element, athird lens element, a fourth lens element, a fifth lens element, a sixthlens element and a seventh lens element. Each of the seven lens elementshas an object-side surface facing toward the object side and animage-side surface facing toward the image side.

The object-side surface of the first lens element can be concave in aparaxial region thereof. Therefore, it is favorable for adjusting theincident angle of light on the first lens element so as to increase thefield of view and reduce the size of the object side of thephotographing optical lens system. The image-side surface of the firstlens element can be convex in a paraxial region thereof. Therefore, itis favorable for the first and second lens elements to collaborationwith each other so as to reduce the size of the object side of thephotographing optical lens system and correct aberrations.

The object-side surface of the second lens element can be convex in aparaxial region thereof. Therefore, it is favorable for adjusting thesurface shape and refractive power of the second lens element so as toreduce the size of the object side of the photographing optical lenssystem. The image-side surface of the second lens element can be concavein a paraxial region thereof. Therefore, it is favorable for adjustingthe surface shape of the second lens element so as to correctaberrations such as astigmatism.

The image-side surface of the fourth lens element can be convex in aparaxial region thereof. Therefore, it is favorable for adjusting thetravelling direction of light rays so as to obtain a balance betweenwide field of view and miniaturization of the photographing optical lenssystem. The fourth lens element can have positive refractive power.Therefore, it is favorable for adjusting the refractive powerdistribution of the photographing optical lens system so as to reducethe system size and enlarge the field of view.

The object-side surface of the sixth lens element is concave in aparaxial region thereof. Therefore, it is favorable for adjusting thetravelling direction of light rays so as to adjust system sizedistribution and enlarge the field of view. The image-side surface ofthe sixth lens element is convex in a paraxial region thereof.Therefore, it is favorable for adjusting the travelling direction oflight rays so as to increase the image surface area and improve imagequality. The sixth lens element can have positive refractive power.Therefore, it is favorable for reducing the size of the image side ofthe photographing optical lens system.

The seventh lens element can have negative refractive power. Therefore,it is favorable for balancing the refractive power distribution at imageside of the photographing optical lens system so as to correctaberrations such as spherical aberration. The object-side surface of theseventh lens element can be convex in a paraxial region thereof.Therefore, it is favorable for adjusting the surface shape of theseventh lens element so as to correct off-axis aberrations. Theimage-side surface of the seventh lens element can be concave in aparaxial region thereof. Therefore, it is favorable for adjusting theback focal length to the proper length.

According to the present disclosure, at least one of the object-sidesurface and the image-side surface of at least one lens element of thephotographing optical lens system has at least one inflection point.Therefore, it is favorable for increasing the variation of lens surfaceso as to correct aberrations and reduce the size of lens element.Moreover, at least one of the object-side surface and the image-sidesurface of each of at least two lens elements of the photographingoptical lens system can also have at least one inflection point.Moreover, at least one of the object-side surface and the image-sidesurface of each of at least three lens elements of the photographingoptical lens system can also have at least one inflection point. Pleaserefer to FIG. 23, which shows a schematic view of inflection points P oflens elements according to the 1st embodiment of the present disclosure.

According to the present disclosure, at least one of the object-sidesurface and the image-side surface of at least one lens element of thephotographing optical lens system can have at least one critical pointin an off-axis region thereof. Therefore, it is favorable for furtherincreasing the variation of lens surface so as to improve image quality,reduce the system size and enlarge the field of view. The object-sidesurface of the first lens element can have at least one critical pointin an off-axis region thereof. Therefore, it is favorable for adjustingthe surface shape of the first lens element so as to enlarge the fieldof view and reduce the size of the object side of the photographingoptical lens system. When a vertical distance between a critical pointon the object-side surface of the first lens element and an optical axisis Yc11, and a maximum effective radius of the object-side surface ofthe first lens element is Y11, the object-side surface of the first lenselement can have at least one critical point in the off-axis regionthereof satisfying the following condition: 0.15<Yc11/Y11<0.75.Therefore, it is favorable for further adjusting the surface shape ofthe first lens element so as to reduce the size of the object side ofthe photographing optical lens system. The image-side surface of thefirst lens element can have at least one critical point in an off-axisregion thereof. Therefore, it is favorable for adjusting the surfaceshape of the first lens element so as to reduce the outer diameter ofthe first lens element. When a vertical distance between a criticalpoint on the image-side surface of the first lens element and theoptical axis is Yc12, and a maximum effective radius of the image-sidesurface of the first lens element is Y12, the image-side surface of thefirst lens element can have at least one critical point in the off-axisregion thereof satisfying the following condition: 0.20<Yc12/Y12<0.75.Therefore, it is favorable for further adjusting the surface shape ofthe first lens element so as to reduce the outer diameter of the firstlens element. The object-side surface of the seventh lens element canhave at least one critical point in an off-axis region thereof.Therefore, it is favorable for adjusting the incident angle of light onthe seventh lens element so as to reduce stray light, increaseilluminance and improve image quality. When a vertical distance betweena critical point on the object-side surface of the seventh lens elementand the optical axis is Yc71, and a maximum effective radius of theobject-side surface of the seventh lens element is Y71, the object-sidesurface of the seventh lens element can have at least one critical pointin the off-axis region thereof satisfying the following condition:0.10<Yc71/Y71<0.50. Therefore, it is favorable for further improving theimage quality. The image-side surface of the seventh lens element canhave at least one critical point in an off-axis region thereof.Therefore, it is favorable for adjusting the incident angle of light onthe image surface so as to increase image quality and improve theresponse efficiency of an image sensor. When a vertical distance betweena critical point on the image-side surface of the seventh lens elementand the optical axis is Yc72, and a maximum effective radius of theimage-side surface of the seventh lens element is Y72, the image-sidesurface of the seventh lens element can have at least one critical pointin the off-axis region thereof satisfying the following condition:0.35<Yc72/Y72<0.80. Therefore, it is favorable for further improving theimage quality. Please refer to FIG. 23, which shows a schematic view ofY11, Yc11, Y12, Yc12, Y71, Yc71, Y72, Yc72, and critical points C oflens elements according to the 1st embodiment of the present disclosure.

When an Abbe number of the third lens element is V3, an Abbe number ofthe fourth lens element is V4, and an Abbe number of the fifth lenselement is V5, the following condition is satisfied:0.30<(V3+V5)/V4<1.2. Therefore, it is favorable for adjusting thematerial distribution of lens elements so as to correct aberrations suchas chromatic aberration. Moreover, the following condition can also besatisfied: 0.40<(V3+V5)/V4<1.0. Moreover, the following condition canalso be satisfied: 0.50<(V3+V5)/V4<0.80.

When an axial distance between the object-side surface of the first lenselement and an image surface is TL, and an entrance pupil diameter ofthe photographing optical lens system is EPD, the following conditioncan be satisfied: 1.0<TL/EPD<6.0. Therefore, it is favorable forobtaining a balance between reducing the total track length andenlarging the size of aperture stop. Moreover, the following conditioncan also be satisfied: 2.0<TL/EPD<5.0. Moreover, the following conditioncan also be satisfied: 2.8<TL/EPD<4.0.

When the axial distance between the object-side surface of the firstlens element and the image surface is TL, and a maximum image height ofthe photographing optical lens system (which can be half of a diagonallength of an effective photosensitive area of an image sensor) is ImgH,the following condition can be satisfied: 0.80<TL/ImgH<1.8. Therefore,it is favorable for obtaining a balance between reducing the total tracklength and enlarging the image surface, and favorable for enlarging thefield of view. Moreover, the following condition can also be satisfied:1.0<TL/ImgH<1.6.

When a central thickness of the sixth lens element is CT6, a centralthickness of the seventh lens element is CT7, and an axial distancebetween the sixth lens element and the seventh lens element is T67, thefollowing condition can be satisfied: 1.5<(CT6+CT7)/T67<13. Therefore,it is favorable for the sixth and seventh lens elements to collaborationwith each other so as to correct aberrations and adjust the sizedistribution of the image side of the photographing optical lens system.Moreover, the following condition can also be satisfied:2.0<(CT6+CT7)/T67<10. Moreover, the following condition can also besatisfied: 2.5<(CT6+CT7)/T67<8.0. Moreover, the following condition canalso be satisfied: 3.0<(CT6+CT7)/T67<6.0.

When a focal length of the first lens element is f1, and a focal lengthof the fourth lens element is f4, the following condition can besatisfied: 2.2<|f1/f4|. Therefore, it is favorable for adjusting therefractive power distribution of the photographing optical lens systemso as to increase the field of view and reduce the system size.Moreover, the following condition can also be satisfied: 3.0<|f1/f4|.Moreover, the following condition can also be satisfied: 3.7<|f1/f4|.

When the Abbe number of the third lens element is V3, the Abbe number ofthe fourth lens element is V4, the Abbe number of the fifth lens elementis V5, an Abbe number of the sixth lens element is V6, and an Abbenumber of the seventh lens element is V7, the following condition can besatisfied: 4.0<(V4+V6+V7)/(V3+V5)<6.0. Therefore, it is favorable foradjusting the size distribution of lens elements so as to correctchromatic aberration.

When the maximum effective radius of the object-side surface of thefirst lens element is Y11, and the maximum effective radius of theimage-side surface of the seventh lens element is Y72, the followingcondition can be satisfied: 0.25<Y11/Y72<0.90. Therefore, it isfavorable for adjusting the travelling direction of light rays so as toobtain a balance among the field of view, the image surface size and thesystem size distribution. Moreover, the following condition can also besatisfied: 0.30<Y11/Y72<0.75.

When a minimum value among Abbe numbers of all lens elements of thephotographing optical lens system is Vmin, the following condition canbe satisfied: 10.0<Vmin<20.0. Therefore, it is favorable for adjustingthe material distribution of lens elements so as to further correctchromatic aberration.

When a focal length of the photographing optical lens system is f, thefocal length of the first lens element is f1, a focal length of thesecond lens element is f2, and a focal length of the third lens elementis f3, the following condition can be satisfied:|f/f1|+|f/f2|+|f/f3|<1.0. Therefore, it is favorable for adjusting therefractive power distribution of the object side of the photographingoptical lens system so as to enlarge the field of view, correctaberrations and reduce the object-side size of the system. Moreover, thefollowing condition can also be satisfied: |f/f1|+|f/f2|+|f/f3|<0.85.

When a central thickness of the first lens element is CT1, and a centralthickness of the third lens element is CT3, the following condition canbe satisfied: 0.90<CT1/CT3<2.8. Therefore, it is favorable for adjustingthe distribution of lens elements at the object side of photographingoptical lens system so as to reduce the object-side size of the system.Moreover, the following condition can also be satisfied:1.1<CT1/CT3<2.5.

When the central thickness of the third lens element is CT3, and acentral thickness of the fourth lens element is CT4, the followingcondition can be satisfied: 0.15<CT3/CT4<0.60. Therefore, it isfavorable for the third and fourth lens elements to collaborate witheach other so as to balance the size distribution between the objectside and image side of the photographing optical lens system. Moreover,the following condition can also be satisfied: 0.25<CT3/CT4<0.40.

When the focal length of the fourth lens element is f4, and a focallength of the sixth lens element is f6, the following condition can besatisfied: 1.3<f4/f6<2.5. Therefore, it is favorable for adjusting therefractive power distribution so as to reduce the size and thesensitivity of the photographing optical lens system.

When the focal length of the photographing optical lens system is f, acurvature radius of the object-side surface of the sixth lens element isR11, and a curvature radius of the image-side surface of the sixth lenselement is R12, the following condition can be satisfied:−7.5<f/R11+f/R12<−1.5. Therefore, it is favorable for adjusting thesurface shape and refractive power of the sixth lens element so as tocorrect aberrations, enlarge the field of view and increase the imagesurface area. Moreover, the following condition can also be satisfied:−6.5<f/R11+f/R12<−2.5. Moreover, the following condition can also besatisfied: −5.5<f/R11+f/R12<−3.5.

When the focal length of the photographing optical lens system is f, anda curvature radius of the image-side surface of the seventh lens elementis R14, the following condition can be satisfied: 3.0<f/R14<4.0.Therefore, it is favorable for adjusting the surface shape andrefractive power of the seventh lens element so as to correctaberrations and adjust the back focal length.

When the axial distance between the object-side surface of the firstlens element and the image surface is TL, and the focal length of thephotographing optical lens system is f, the following condition can besatisfied: 1.2<TL/f<2.5. Therefore, it is favorable for obtaining abalance between reducing the total track length and enlarging the fieldof view. Moreover, the following condition can also be satisfied:1.5<TL/f<2.0.

When an Abbe number of the first lens element is V1, an Abbe number ofthe second lens element is V2, and the Abbe number of the third lenselement is V3, the following condition can be satisfied:40.0<V1+V2+V3<125.0. Therefore, it is favorable for the materials of thefirst, second and third lens elements to collaborate with one another soas to correct aberrations such as chromatic aberration. Moreover, thefollowing condition can also be satisfied: 45.0<V1+V2+V3<115.0.

When the focal length of the photographing optical lens system is f, anda composite focal length of the first lens element, the second lenselement and the third lens element is f123, the following condition canbe satisfied: |f/f123|<0.40. Therefore, it is favorable for adjustingthe refractive power distribution at the object side of thephotographing optical lens system so as to enlarge the field of view andcorrect aberrations. Moreover, the following condition can also besatisfied: |f/f123|<0.35.

When the focal length of the first lens element is f1, and a curvatureradius of the object-side surface of the first lens element is R1, thefollowing condition can be satisfied: |f1|/R1<−2.5. Therefore, it isfavorable for adjusting the surface shape and refractive power of thefirst lens element so as to enlarge the field of view and reduce theouter diameter of the first lens element. Moreover, the followingcondition can also be satisfied: |f1|/R1<−4.0.

When the central thickness of the first lens element is CT1, a centralthickness of the second lens element is CT2, and an axial distancebetween the first lens element and the second lens element is T12, thefollowing condition can be satisfied: 0.80<(CT1+CT2)/T12<12. Therefore,it is favorable for the first and second lens elements to collaborationwith each other so as to enlarge the field of view. Moreover, thefollowing condition can also be satisfied: 1.2<(CT1+CT2)/T12<9.5.

When half of a maximum field of view of the photographing optical lenssystem is HFOV, the following condition can be satisfied: 42.5degrees<HFOV<65.0 degrees. Therefore, it is favorable for obtaining awide angle configuration and preventing aberrations such as distortiongenerated due to an overly large field of view. Moreover, the followingcondition can also be satisfied: 47.0 degrees<HFOV<58.0 degrees.

When an f-number of the photographing optical lens system is Fno, thefollowing condition can be satisfied: 1.2<Fno<2.0. Therefore, it isfavorable for obtaining a balance between the illuminance and depth offield.

When the focal length of the photographing optical lens system is f, andthe focal length of the first lens element is f1, the followingcondition can be satisfied: |f/f1|<0.45. Therefore, it is favorable foradjusting the refractive power of the first lens element so as toenlarge the field of view and correct aberrations. Moreover, thefollowing condition can also be satisfied: |f/f1|<0.30.

When the focal length of the photographing optical lens system is f, anda focal length of the seventh lens element is f7, the followingcondition can be satisfied: −1.8<f/f7<−0.70. Therefore, it is favorablefor further adjusting the refractive power of the seventh lens elementso as to correct aberrations.

When the focal length of the photographing optical lens system is f, anda composite focal length of the fourth lens element, the fifth lenselement and the sixth lens element is f456, the following condition canbe satisfied: 1.2<f/f456<1.8. Therefore, it is favorable for the fourth,fifth and sixth lens elements to collaborate with one another so as toreduce the system size and correct aberrations.

When the curvature radius of the object-side surface of the sixth lenselement is R11, and the curvature radius of the image-side surface ofthe sixth lens element is R12, the following condition can be satisfied:1.3<(R11+R12)/(R11−R12)<4.0. Therefore, it is favorable for adjustingthe surface shape and refractive power of the sixth lens element so asto enlarge the field of view and increase the image surface area.Moreover, the following condition can also be satisfied:1.6<(R11+R12)/(R11−R12)<3.5.

According to the present disclosure, the aforementioned features andconditions can be utilized in numerous combinations so as to achievecorresponding effects.

According to the present disclosure, the lens elements of thephotographing optical lens system can be made of either glass or plasticmaterial. When the lens elements are made of glass material, therefractive power distribution of the photographing optical lens systemmay be more flexible, and the influence on imaging caused by externalenvironment temperature change may be reduced. The glass lens elementcan either be made by grinding or molding. When the lens elements aremade of plastic material, the manufacturing costs can be effectivelyreduced. Furthermore, surfaces of each lens element can be arranged tobe spherical or aspheric. Spherical lens elements are simple inmanufacture. Aspheric lens element design allows more control variablesfor eliminating aberrations thereof and reducing the required number oflens elements, and the total track length of the photographing opticallens system can therefore be effectively shortened. Additionally, theaspheric surfaces may be formed by plastic injection molding or glassmolding.

According to the present disclosure, when a lens surface is aspheric, itmeans that the lens surface has an aspheric shape throughout itsoptically effective area, or a portion(s) thereof.

According to the present disclosure, one or more of the lens elements'material may optionally include an additive which alters the lenselements' transmittance in a specific range of wavelength for areduction in unwanted stray light or color deviation. For example, theadditive may optionally filter out light in the wavelength range of 600nm to 800 nm to reduce excessive red light and/or near infrared light;or may optionally filter out light in the wavelength range of 350 nm to450 nm to reduce excessive blue light and/or near ultraviolet light frominterfering the final image. The additive may be homogeneously mixedwith a plastic material to be used in manufacturing a mixed-materiallens element by injection molding. Moreover, the additive may be coatedon the lens surfaces to provide the abovementioned effects.

According to the present disclosure, each of an object-side surface andan image-side surface has a paraxial region and an off-axis region. Theparaxial region refers to the region of the surface where light raystravel close to the optical axis, and the off-axis region refers to theregion of the surface away from the paraxial region. Particularly,unless otherwise stated, when the lens element has a convex surface, itindicates that the surface is convex in the paraxial region thereof;when the lens element has a concave surface, it indicates that thesurface is concave in the paraxial region thereof. Moreover, when aregion of refractive power or focus of a lens element is not defined, itindicates that the region of refractive power or focus of the lenselement is in the paraxial region thereof.

According to the present disclosure, an inflection point is a point onthe surface of the lens element at which the surface changes fromconcave to convex, or vice versa. A critical point is a non-axial pointof the lens surface where its tangent is perpendicular to the opticalaxis.

According to the present disclosure, the image surface of thephotographing optical lens system, based on the corresponding imagesensor, can be flat or curved, especially a curved surface being concavefacing towards the object side of the photographing optical lens system.

According to the present disclosure, an image correction unit, such as afield flattener, can be optionally disposed between the lens elementclosest to the image side of the photographing optical lens system alongthe optical path and the image surface for correction of aberrationssuch as field curvature. The optical properties of the image correctionunit, such as curvature, thickness, index of refraction, position andsurface shape (convex or concave surface with spherical, aspheric,diffractive or Fresnel types), can be adjusted according to the designof the image capturing unit. In general, a preferable image correctionunit is, for example, a thin transparent element having a concaveobject-side surface and a planar image-side surface, and the thintransparent element is disposed near the image surface.

According to the present disclosure, at least one light-folding element,such as a prism or a mirror, can be optionally disposed between animaged object and the image surface on the imaging optical path, suchthat the photographing optical lens system can be more flexible in spacearrangement, and therefore the dimensions of an electronic device is notrestricted by the total track length of the photographing optical lenssystem. Specifically, please refer to FIG. 24 and FIG. 25. FIG. 24 showsa schematic view of a configuration of a light-folding element in aphotographing optical lens system according to one embodiment of thepresent disclosure, and FIG. 25 shows a schematic view of anotherconfiguration of a light-folding element in a photographing optical lenssystem according to one embodiment of the present disclosure. In FIG. 24and FIG. 25, the photographing optical lens system can have, in orderfrom an imaged object (not shown in the figures) to an image surface IMalong an optical path, a first optical axis OA1, a light-folding elementLF and a second optical axis OA2. The light-folding element LF can bedisposed between the imaged object and a lens group LG of thephotographing optical lens system as shown in FIG. 24 or disposedbetween a lens group LG of the photographing optical lens system and theimage surface IM as shown in FIG. 25. Furthermore, please refer to FIG.26, which shows a schematic view of a configuration of two light-foldingelements in a photographing optical lens system according to oneembodiment of the present disclosure. In FIG. 26, the photographingoptical lens system can have, in order from an imaged object (not shownin the figure) to an image surface IM along an optical path, a firstoptical axis OA1, a first light-folding element LF1, a second opticalaxis OA2, a second light-folding element LF2 and a third optical axisOA3. The first light-folding element LF1 is disposed between the imagedobject and a lens group LG of the photographing optical lens system, thesecond light-folding element LF2 is disposed between the lens group LGof the photographing optical lens system and the image surface IM. Thephotographing optical lens system can be optionally provided with threeor more light-folding elements, and the present disclosure is notlimited to the type, amount and position of the light-folding elementsof the embodiments disclosed in the aforementioned figures.

According to the present disclosure, the photographing optical lenssystem can include at least one stop, such as an aperture stop, a glarestop or a field stop. Said glare stop or said field stop is set foreliminating the stray light and thereby improving image quality thereof.

According to the present disclosure, an aperture stop can be configuredas a front stop or a middle stop. A front stop disposed between animaged object and the first lens element can provide a longer distancebetween an exit pupil of the photographing optical lens system and theimage surface to produce a telecentric effect, and thereby improves theimage-sensing efficiency of an image sensor (for example, CCD or CMOS).A middle stop disposed between the first lens element and the imagesurface is favorable for enlarging the viewing angle of thephotographing optical lens system and thereby provides a wider field ofview for the same.

According to the present disclosure, the photographing optical lenssystem can include an aperture control unit. The aperture control unitmay be a mechanical component or a light modulator, which can controlthe size and shape of the aperture through electricity or electricalsignals. The mechanical component can include a movable member, such asa blade assembly or a light shielding sheet. The light modulator caninclude a shielding element, such as a filter, an electrochromicmaterial or a liquid-crystal layer. The aperture control unit controlsthe amount of incident light or exposure time to enhance the capabilityof image quality adjustment. In addition, the aperture control unit canbe the aperture stop of the present disclosure, which changes thef-number to obtain different image effects, such as the depth of fieldor lens speed.

According to the above description of the present disclosure, thefollowing specific embodiments are provided for further explanation.

1st Embodiment

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure. FIG. 2 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 1stembodiment. In FIG. 1, the image capturing unit includes thephotographing optical lens system (its reference numeral is omitted) ofthe present disclosure and an image sensor 195. The photographingoptical lens system includes, in order from an object side to an imageside along an optical path, a first lens element 110, an aperture stop100, a second lens element 120, a third lens element 130, a stop 101, afourth lens element 140, a fifth lens element 150, a sixth lens element160, a seventh lens element 170, a filter 180 and an image surface 190.The photographing optical lens system includes seven lens elements (110,120, 130, 140, 150, 160 and 170) with no additional lens elementdisposed between each of the adjacent seven lens elements.

The first lens element 110 with positive refractive power has anobject-side surface 111 being concave in a paraxial region thereof andan image-side surface 112 being convex in a paraxial region thereof. Thefirst lens element 110 is made of plastic material and has theobject-side surface 111 and the image-side surface 112 being bothaspheric. The object-side surface 111 of the first lens element 110 hasone inflection point. The image-side surface 112 of the first lenselement 110 has one inflection point. The object-side surface 111 of thefirst lens element 110 has one critical point in an off-axis regionthereof. The image-side surface 112 of the first lens element 110 hasone critical point in an off-axis region thereof.

The second lens element 120 with positive refractive power has anobject-side surface 121 being convex in a paraxial region thereof and animage-side surface 122 being concave in a paraxial region thereof. Thesecond lens element 120 is made of plastic material and has theobject-side surface 121 and the image-side surface 122 being bothaspheric.

The third lens element 130 with negative refractive power has anobject-side surface 131 being convex in a paraxial region thereof and animage-side surface 132 being concave in a paraxial region thereof. Thethird lens element 130 is made of plastic material and has theobject-side surface 131 and the image-side surface 132 being bothaspheric. The object-side surface 131 of the third lens element 130 hasone inflection point. The image-side surface 132 of the third lenselement 130 has one inflection point. The object-side surface 131 of thethird lens element 130 has one critical point in an off-axis regionthereof. The image-side surface 132 of the third lens element 130 hasone critical point in an off-axis region thereof.

The fourth lens element 140 with positive refractive power has anobject-side surface 141 being convex in a paraxial region thereof and animage-side surface 142 being convex in a paraxial region thereof. Thefourth lens element 140 is made of plastic material and has theobject-side surface 141 and the image-side surface 142 being bothaspheric. The object-side surface 141 of the fourth lens element 140 hasone inflection point.

The fifth lens element 150 with positive refractive power has anobject-side surface 151 being convex in a paraxial region thereof and animage-side surface 152 being convex in a paraxial region thereof. Thefifth lens element 150 is made of plastic material and has theobject-side surface 151 and the image-side surface 152 being bothaspheric. The object-side surface 151 of the fifth lens element 150 hastwo inflection points. The image-side surface 152 of the fifth lenselement 150 has one inflection point. The object-side surface 151 of thefifth lens element 150 has one critical point in an off-axis regionthereof. The image-side surface 152 of the fifth lens element 150 hasone critical point in an off-axis region thereof.

The sixth lens element 160 with positive refractive power has anobject-side surface 161 being concave in a paraxial region thereof andan image-side surface 162 being convex in a paraxial region thereof. Thesixth lens element 160 is made of plastic material and has theobject-side surface 161 and the image-side surface 162 being bothaspheric. The object-side surface 161 of the sixth lens element 160 hasone inflection point. The image-side surface 162 of the sixth lenselement 160 has two inflection points.

The seventh lens element 170 with negative refractive power has anobject-side surface 171 being convex in a paraxial region thereof and animage-side surface 172 being concave in a paraxial region thereof. Theseventh lens element 170 is made of plastic material and has theobject-side surface 171 and the image-side surface 172 being bothaspheric. The object-side surface 171 of the seventh lens element 170has two inflection points. The image-side surface 172 of the seventhlens element 170 has two inflection points. The object-side surface 171of the seventh lens element 170 has one critical point in an off-axisregion thereof. The image-side surface 172 of the seventh lens element170 has one critical point in an off-axis region thereof.

The filter 180 is made of glass material and located between the seventhlens element 170 and the image surface 190, and will not affect thefocal length of the photographing optical lens system. The image sensor195 is disposed on or near the image surface 190 of the photographingoptical lens system.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(Y)} = {{\left( {Y^{2}/R} \right)/\left( {1 + {sqr{t\left( {1 - {\left( {1 + k} \right) \times \left( {Y/R} \right)^{2}}} \right)}}} \right)} + {\sum\limits_{i}{({Ai}) \times \left( Y^{i} \right)}}}},$

where,

X is the displacement in parallel with an optical axis from an axialvertex on the aspheric surface to a point at a distance of Y from theoptical axis on the aspheric surface;

Y is the vertical distance from the point on the aspheric surface to theoptical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient, and in the embodiments, i may be,but is not limited to, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28and 30.

In the photographing optical lens system of the image capturing unitaccording to the 1st embodiment, when a focal length of thephotographing optical lens system is f, an f-number of the photographingoptical lens system is Fno, and half of a maximum field of view of thephotographing optical lens system is HFOV, these parameters have thefollowing values: f=3.80 millimeters (mm), Fno=1.87, HFOV=50.0 degrees(deg.).

When an Abbe number of the first lens element 110 is V1, an Abbe numberof the second lens element 120 is V2, and an Abbe number of the thirdlens element 130 is V3, the following condition is satisfied:V1+V2+V3=119.1.

When the Abbe number of the third lens element 130 is V3, an Abbe numberof the fourth lens element 140 is V4, and an Abbe number of the fifthlens element 150 is V5, the following condition is satisfied:(V3+V5)/V4=0.66.

When the Abbe number of the third lens element 130 is V3, the Abbenumber of the fourth lens element 140 is V4, the Abbe number of thefifth lens element 150 is V5, an Abbe number of the sixth lens element160 is V6, and an Abbe number of the seventh lens element 170 is V7, thefollowing condition is satisfied: (V4+V6+V7)/(V3+V5)=4.57.

When a minimum value among Abbe numbers of all lens elements of thephotographing optical lens system is Vmin, the following condition issatisfied: Vmin=18.4. In this embodiment, the Abbe number of the thirdlens element 130 and the Abbe number of the fifth lens element 150 areequal and both smaller than Abbe numbers of the other lens elements ofthe photographing optical lens system, and Vmin is equal to the Abbenumber of the third lens element 130 and the Abbe number of the fifthlens element 150.

When a central thickness of the first lens element 110 is CT1, a centralthickness of the second lens element 120 is CT2, and an axial distancebetween the first lens element 110 and the second lens element 120 isT12, the following condition is satisfied: (CT1+CT2)/T12=1.76. In thisembodiment, an axial distance between two adjacent lens elements is adistance in a paraxial region between two adjacent lens surfaces of thetwo adjacent lens elements.

When the central thickness of the first lens element 110 is CT1, and acentral thickness of the third lens element 130 is CT3, the followingcondition is satisfied: CT1/CT3=1.70.

When the central thickness of the third lens element 130 is CT3, and acentral thickness of the fourth lens element 140 is CT4, the followingcondition is satisfied: CT3/CT4=0.34.

When a central thickness of the sixth lens element 160 is CT6, a centralthickness of the seventh lens element 170 is CT7, and an axial distancebetween the sixth lens element 160 and the seventh lens element 170 isT67, the following condition is satisfied: (CT6+CT7)/T67=4.29.

When an axial distance between the object-side surface 111 of the firstlens element 110 and the image surface 190 is TL, and an entrance pupildiameter of the photographing optical lens system is EPD, the followingcondition is satisfied: TL/EPD=3.07.

When the axial distance between the object-side surface 111 of the firstlens element 110 and the image surface 190 is TL, and the focal lengthof the photographing optical lens system is f, the following conditionis satisfied: TL/f=1.64.

When the axial distance between the object-side surface 111 of the firstlens element 110 and the image surface 190 is TL, and a maximum imageheight of the photographing optical lens system is ImgH, the followingcondition is satisfied: TL/ImgH=1.35.

When a curvature radius of the object-side surface 161 of the sixth lenselement 160 is R11, and a curvature radius of the image-side surface 162of the sixth lens element 160 is R12, the following condition issatisfied: (R11+R12)/(R11−R12)=3.26.

When the focal length of the photographing optical lens system is f, anda focal length of the first lens element 110 is f1, the followingcondition is satisfied: |f/f1|=0.03.

When the focal length of the photographing optical lens system is f, thefocal length of the first lens element 110 is f1, a focal length of thesecond lens element 120 is f2, and a focal length of the third lenselement 130 is f3, the following condition is satisfied:|f/f1|+|f/f2|+|f/f3|=0.70.

When the focal length of the photographing optical lens system is f, anda focal length of the seventh lens element 170 is f7, the followingcondition is satisfied: f/f7=−1.26.

When the focal length of the photographing optical lens system is f, anda composite focal length of the first lens element 110, the second lenselement 120 and the third lens element 130 is f123, the followingcondition is satisfied: |f/f123|=0.30.

When the focal length of the photographing optical lens system is f, anda composite focal length of the fourth lens element 140, the fifth lenselement 150 and the sixth lens element 160 is f456, the followingcondition is satisfied: f/f456=1.40.

When the focal length of the photographing optical lens system is f, thecurvature radius of the object-side surface 161 of the sixth lenselement 160 is R11, and the curvature radius of the image-side surface162 of the sixth lens element 160 is R12, the following condition issatisfied: f/R11+f/R12=−5.03.

When the focal length of the photographing optical lens system is f, anda curvature radius of the image-side surface 172 of the seventh lenselement 170 is R14, the following condition is satisfied: f/R14=3.65.

When the focal length of the first lens element 110 is f1, and a focallength of the fourth lens element 140 is f4, the following condition issatisfied: |f1/f4|=24.14.

When the focal length of the first lens element 110 is f1, and acurvature radius of the object-side surface 111 of the first lenselement 110 is R1, the following condition is satisfied: |f1|/R1=−43.81.

When the focal length of the photographing optical lens system is f, andthe focal length of the fourth lens element 140 is f4, and a focallength of the sixth lens element 160 is f6, the following condition issatisfied: f4/f6=1.45.

When a maximum effective radius of the object-side surface 111 of thefirst lens element 110 is Y11, and a maximum effective radius of theimage-side surface 172 of the seventh lens element 170 is Y72, thefollowing condition is satisfied: Y11/Y72=0.65.

When a vertical distance between a critical point on the object-sidesurface 111 of the first lens element 110 and the optical axis is Yc11,and the maximum effective radius of the object-side surface 111 of thefirst lens element 110 is Y11, the object-side surface 111 of the firstlens element 110 has one critical point in the off-axis region thereofsatisfying the following condition: Yc11/Y11=0.60.

When a vertical distance between a critical point on the image-sidesurface 112 of the first lens element 110 and the optical axis is Yc12,and a maximum effective radius of the image-side surface 112 of thefirst lens element 110 is Y12, the image-side surface 112 of the firstlens element 110 has one critical point in the off-axis region thereofsatisfying the following condition: Yc12/Y12=0.58.

When a vertical distance between a critical point on the object-sidesurface 171 of the seventh lens element 170 and the optical axis isYc71, and a maximum effective radius of the object-side surface 171 ofthe seventh lens element 170 is Y71, the object-side surface 171 of theseventh lens element 170 has one critical point in the off-axis regionthereof satisfying the following condition: Yc71/Y71=0.22.

When a vertical distance between a critical point on the image-sidesurface 172 of the seventh lens element 170 and the optical axis isYc72, and the maximum effective radius of the image-side surface 172 ofthe seventh lens element 170 is Y72, the image-side surface 172 of theseventh lens element 170 has one critical point in the off-axis regionthereof satisfying the following condition: Yc72/Y72=0.53.

The detailed optical data of the 1st embodiment are shown in Table 1 andthe aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 3.80 mm, Fno = 1.87, HFOV = 50.0 deg. Surface# Curvature Radius Thickness Material Index Abbe # Focal Length  0Object Plano Infinity  1 Lens 1 −2.9905 (ASP) 0.373 Plastic 1.545 56.1131.00   2 −2.9965 (ASP) 0.793  3 Ape. Stop Plano −0.339   4 Lens 22.0758 (ASP) 0.428 Plastic 1.562 44.6  8.51  5 3.3973 (ASP) 0.299  6Lens 3 9.4726 (ASP) 0.220 Plastic 1.686 18.4 −16.86   7 5.1587 (ASP)0.055  8 Stop Plano −0.018   9 Lens 4 10.8792 (ASP) 0.654 Plastic 1.54456.0  5.43 10 −3.9651 (ASP) 0.224 11 Lens 5 222.7171 (ASP) 0.230 Plastic1.686 18.4 141.68  12 −172.4138 (ASP) 0.587 13 Lens 6 −2.1774 (ASP)0.615 Plastic 1.544 56.0  3.73 14 −1.1555 (ASP) 0.260 15 Lens 7 3.3192(ASP) 0.500 Plastic 1.544 56.0 −3.02 16 1.0412 (ASP) 0.800 17 FilterPlano 0.150 Glass 1.517 64.2 — 18 Plano 0.394 19 Image Plano — Note:Reference wavelength is 587.6 nm (d-line). An effective radius of thestop 101 (Surface 8) is 1.050 mm.

TABLE 2 Aspheric Coefficients Surface # 1 2 4 5 6 k= 0.00000E+006.43283E−01 1.04083E+00 0.00000E+00 0.00000E+00 A4= 8.23603715E−021.21474058E−01 4.30904501E−02 1.52077985E−02 −7.78386148E−02 A6=−1.99245487E−02 −4.59830887E−02 −5.22825749E−02 −2.42395376E−028.63568235E−03 A8= 5.53644497E−03 2.38165306E−02 5.60931236E−027.27986259E−02 −1.52856685E−01 A10= −1.13142157E−03 −9.14256928E−03−3.67989207E−02 −7.48039815E−02 4.11931635E−01 A12= 1.61863376E−042.34410026E−03 1.19153382E−02 3.42717674E−02 −5.51913311E−01 A14=−1.29348377E−05 −3.28870226E−04 7.05255269E−04 — 3.62920637E−01 A16=4.18281437E−07 1.85843103E−05 — — −9.37544772E−02 Surface # 7 9 10 11 12k= 0.00000E+00 0.00000E+00 0.00000E+00 9.00000E+01 9.00000E+01 A4=−3.36864040E−02 3.66158658E−02 −8.65190246E−02 −1.48203126E−01−6.17765424E−02 A6= −2.88696810E−02 1.80115689E−04 −5.16631443E−03−1.07760597E−01 −1.48711095E−01 A8= −6.53059452E−02 −1.25313207E−018.97724136E−02 2.08960129E−01 3.40962038E−01 A10= 1.09504302E−011.59926421E−01 −1.73100935E−01 −2.30259515E−01 −4.60477262E−01 A12=−6.08945294E−02 −7.46335653E−02 1.59165376E−01 1.10415622E−014.03335584E−01 A14= 1.18114186E−02 9.65354389E−03 −7.09397117E−02−1.03402821E−02 −2.32215007E−01 A16= — — 1.17175571E−02 −3.23564595E−038.33599779E−02 A18= — — — — −1.61013081E−02 A20= — — — — 1.23067675E−03Surface # 13 14 15 16 — k= 0.00000E+00 −9.19789E−01 0.00000E+00−1.00111E+00 — A4= 1.50459425E−02 8.27771843E−02 −2.04653652E−01−3.99729808E−01 — A6= −8.62525646E−02 −1.65080592E−01 −1.16541085E−022.95046470E−01 — A8= 3.38853699E−02 1.77610229E−01 1.45028225E−01−1.80054145E−01 — A10= 6.70983578E−02 −1.29141722E−01 −1.39114826E−018.50700991E−02 — A12= −7.27817814E−02 6.40934576E−02 7.46574650E−02−3.02971923E−02 — A14= 2.89026208E−02 −1.47309051E−02 −2.65731557E−028.02928627E−03 — A16= −5.09606834E−03 −1.61530414E−03 6.66013944E−03−1.57552916E−03 — A18= 3.30566609E−04 1.83990285E−03 −1.20545471E−032.27986908E−04 — A20= — −4.54147726E−04 1.58647419E−04 −2.41369912E−05 —A22= — 5.06210377E−05 −1.50639469E−05 1.83984454E−06 — A24= —−2.20189714E−06 1.00665940E−06 −9.80118611E−08 — A26= — —−4.49654762E−08 3.45503579E−09 — A28= — — 1.20632035E−09 −7.22762242E−11— A30= — — −1.47110368E−11 6.78275644E−13 —

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-19 represent the surfacessequentially arranged from the object side to the image side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A4-A30 represent the asphericcoefficients ranging from the 4th order to the 30th order. The tablespresented below for each embodiment are the corresponding schematicparameter and aberration curves, and the definitions of the tables arethe same as Table 1 and Table 2 of the 1st embodiment. Therefore, anexplanation in this regard will not be provided again.

2nd Embodiment

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure. FIG. 4 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 2ndembodiment. In FIG. 3, the image capturing unit includes thephotographing optical lens system (its reference numeral is omitted) ofthe present disclosure and an image sensor 295. The photographingoptical lens system includes, in order from an object side to an imageside along an optical path, a first lens element 210, an aperture stop200, a second lens element 220, a third lens element 230, a stop 201, afourth lens element 240, a fifth lens element 250, a sixth lens element260, a seventh lens element 270, a filter 280 and an image surface 290.The photographing optical lens system includes seven lens elements (210,220, 230, 240, 250, 260 and 270) with no additional lens elementdisposed between each of the adjacent seven lens elements.

The first lens element 210 with negative refractive power has anobject-side surface 211 being concave in a paraxial region thereof andan image-side surface 212 being convex in a paraxial region thereof. Thefirst lens element 210 is made of plastic material and has theobject-side surface 211 and the image-side surface 212 being bothaspheric. The object-side surface 211 of the first lens element 210 hasone inflection point. The image-side surface 212 of the first lenselement 210 has one inflection point. The object-side surface 211 of thefirst lens element 210 has one critical point in an off-axis regionthereof. The image-side surface 212 of the first lens element 210 hasone critical point in an off-axis region thereof.

The second lens element 220 with negative refractive power has anobject-side surface 221 being convex in a paraxial region thereof and animage-side surface 222 being concave in a paraxial region thereof. Thesecond lens element 220 is made of plastic material and has theobject-side surface 221 and the image-side surface 222 being bothaspheric.

The third lens element 230 with positive refractive power has anobject-side surface 231 being convex in a paraxial region thereof and animage-side surface 232 being concave in a paraxial region thereof. Thethird lens element 230 is made of plastic material and has theobject-side surface 231 and the image-side surface 232 being bothaspheric. The object-side surface 231 of the third lens element 230 hasone inflection point. The image-side surface 232 of the third lenselement 230 has one inflection point.

The fourth lens element 240 with positive refractive power has anobject-side surface 241 being convex in a paraxial region thereof and animage-side surface 242 being convex in a paraxial region thereof. Thefourth lens element 240 is made of plastic material and has theobject-side surface 241 and the image-side surface 242 being bothaspheric. The object-side surface 241 of the fourth lens element 240 hasone inflection point.

The fifth lens element 250 with negative refractive power has anobject-side surface 251 being concave in a paraxial region thereof andan image-side surface 252 being concave in a paraxial region thereof.The fifth lens element 250 is made of plastic material and has theobject-side surface 251 and the image-side surface 252 being bothaspheric. The object-side surface 251 of the fifth lens element 250 hasone inflection point. The image-side surface 252 of the fifth lenselement 250 has two inflection points. The image-side surface 252 of thefifth lens element 250 has two critical points in an off-axis regionthereof.

The sixth lens element 260 with positive refractive power has anobject-side surface 261 being concave in a paraxial region thereof andan image-side surface 262 being convex in a paraxial region thereof. Thesixth lens element 260 is made of plastic material and has theobject-side surface 261 and the image-side surface 262 being bothaspheric. The object-side surface 261 of the sixth lens element 260 hasone inflection point. The image-side surface 262 of the sixth lenselement 260 has two inflection points.

The seventh lens element 270 with negative refractive power has anobject-side surface 271 being convex in a paraxial region thereof and animage-side surface 272 being concave in a paraxial region thereof. Theseventh lens element 270 is made of plastic material and has theobject-side surface 271 and the image-side surface 272 being bothaspheric. The object-side surface 271 of the seventh lens element 270has two inflection points. The image-side surface 272 of the seventhlens element 270 has two inflection points. The object-side surface 271of the seventh lens element 270 has one critical point in an off-axisregion thereof. The image-side surface 272 of the seventh lens element270 has one critical point in an off-axis region thereof.

The filter 280 is made of glass material and located between the seventhlens element 270 and the image surface 290, and will not affect thefocal length of the photographing optical lens system. The image sensor295 is disposed on or near the image surface 290 of the photographingoptical lens system.

The detailed optical data of the 2nd embodiment are shown in Table 3 andthe aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 3.70 mm, Fno = 1.80, HFOV = 50.8 deg. Surface# Curvature Radius Thickness Material Index Abbe # Focal Length  0Object Plano Infinity  1 Lens 1 −4.8411 (ASP) 0.411 Plastic 1.642 22.5−194.96   2 −5.2031 (ASP) 0.638  3 Ape. Stop Plano −0.316   4 Lens 22.8586 (ASP) 0.348 Plastic 1.566 37.4 −86.01   5 2.5813 (ASP) 0.078  6Lens 3 1.9678 (ASP) 0.239 Plastic 1.686 18.4 11.52  7 2.4908 (ASP) 0.243 8 Stop Plano −0.029   9 Lens 4 7.7942 (ASP) 0.730 Plastic 1.544 56.0 4.79 10 −3.7828 (ASP) 0.183 11 Lens 5 −13.2484 (ASP) 0.230 Plastic1.686 18.4 −8.81 12 11.1975 (ASP) 0.546 13 Lens 6 −4.0008 (ASP) 0.858Plastic 1.544 56.0  2.69 14 −1.1517 (ASP) 0.329 15 Lens 7 3.4357 (ASP)0.520 Plastic 1.544 56.0 −2.95 16 1.0356 (ASP) 1.000 17 Filter Plano0.210 Glass 1.517 64.2 — 18 Plano 0.252 19 Image Plano — Note: Referencewavelength is 587.6 nm (d-line). An effective radius of the stop 201(Surface 8) is 1.060 mm.

TABLE 4 Aspheric Coefficients Surface # 1 2 4 5 6 k= 0.00000E+002.58643E+00 2.63685E+00 0.00000E+00 0.00000E+00 A4= 9.83795561E−021.78708496E−01 9.85181755E−02 −2.81535271E−02 −5.47789458E−02 A6=−3.19720421E−02 −9.72956805E−02 −1.16203040E−01 −2.32496512E−027.67027619E−03 A8= 1.24812888E−02 9.02187508E−02 1.36046887E−019.21108405E−02 −7.92146713E−02 A10= −4.71950071E−03 −6.80109371E−02−1.03403418E−01 −6.69140358E−02 1.77519354E−01 A12= 1.43692201E−033.43267978E−02 5.22458775E−02 2.65345891E−02 −1.88052844E−01 A14=−2.64878619E−04 −9.21179626E−03 −1.13730272E−02 — 9.65840564E−02 A16=1.98486648E−05 9.43551493E−04 — — −1.99174216E−02 Surface # 7 9 10 11 12k= 0.00000E+00 0.00000E+00 0.00000E+00 −9.00000E+01 −8.16319E+01 A4=2.61902575E−03 1.69014678E−02 −9.25290593E−02 −2.71126475E−01−1.66779054E−01 A6= −2.19087256E−02 −1.77950684E−02 4.63755594E−029.47863763E−02 7.20823757E−02 A8= −1.61005936E−02 4.30478519E−02−2.63158748E−02 3.30975057E−02 5.01380771E−02 A10= 3.02686017E−02−6.68006186E−02 −2.46301029E−02 −1.48512987E−01 −1.38375845E−01 A12=−1.47652972E−02 5.34009589E−02 3.82104579E−02 1.21234994E−011.32060221E−01 A14= −2.63259761E−05 −1.75379242E−02 −1.81123811E−02−3.70369540E−02 −7.26099345E−02 A16= — — 2.81642822E−03 3.86161566E−032.46545661E−02 A18= — — — — −4.74288267E−03 A20= — — — — 3.97143293E−04Surface # 13 14 15 16 — k= 0.00000E+00 −1.10695E+00 0.00000E+00−1.01315E+00 — A4= 8.89885895E−03 1.00914218E−01 −1.05718686E−01−3.36025956E−01 — A6= −4.47178514E−02 −1.37381574E−01 −4.83977719E−022.27695713E−01 — A8= 3.87081448E−02 1.18343717E−01 1.10694568E−01−1.30826124E−01 — A10= −1.09230499E−02 −6.55469539E−02 −9.16425677E−025.87371628E−02 — A12= −1.71582639E−03 1.93510663E−02 4.76968377E−02−1.99694700E−02 — A14= 1.71831244E−03 9.97660245E−04 −1.73811762E−025.07901564E−03 — A16= −3.56179874E−04 −2.81229131E−03 4.61646593E−03−9.62656295E−04 — A18= 2.39941004E−05 9.48996020E−04 −9.07718313E−041.35527666E−04 — A20= — −1.53832029E−04 1.32211595E−04 −1.40678415E−05 —A22= — 1.26170158E−05 −1.40793370E−05 1.05990647E−06 — A24= —−4.20109989E−07 1.06409985E−06 −5.62764431E−08 — A26= — —−5.39742688E−08 1.99391509E−09 — A28= — — 1.64494146E−09 −4.22697961E−11— A30= — — −2.27334353E−11 4.05161730E−13 —

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 3 and Table 4 asthe following values and satisfy the following conditions:

2nd Embodiment f [mm] 3.70 |f/f1| 0.02 Fno 1.80 |f/f1| + |f/f2| + |f/f3|0.38 HFOV [deg.] 50.8 f/f7 −1.25 V1 + V2 + V3 78.3 |f/f123| 0.25 (V3 +V5)/V4 0.66 f/f456 1.46 (V4 + V6 + V7)/(V3 + V5) 4.57 f/R11 + f/R12−4.14 Vmin 18.4 f/R14 3.57 (CT1 + CT2)/T12 2.36 |f1/f4| 40.72 CT1/CT31.72 |f1|/R1 −40.27 CT3/CT4 0.33 f4/f6 1.78 (CT6 + CT7)/T67 4.19 Y11/Y720.52 TL/EPD 3.15 Yc11/Y11 0.46 TL/f 1.75 Yc12/Y12 0.41 TL/ImgH 1.40Yc71/Y71 0.30 (R11 + R12)/(R11 − R12) 1.81 Yc72/Y72 0.59

3rd Embodiment

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure. FIG. 6 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 3rdembodiment. In FIG. 5, the image capturing unit includes thephotographing optical lens system (its reference numeral is omitted) ofthe present disclosure and an image sensor 395. The photographingoptical lens system includes, in order from an object side to an imageside along an optical path, a first lens element 310, an aperture stop300, a second lens element 320, a third lens element 330, a stop 301, afourth lens element 340, a fifth lens element 350, a sixth lens element360, a stop 302, a seventh lens element 370, a filter 380 and an imagesurface 390. The photographing optical lens system includes seven lenselements (310, 320, 330, 340, 350, 360 and 370) with no additional lenselement disposed between each of the adjacent seven lens elements.

The first lens element 310 with negative refractive power has anobject-side surface 311 being concave in a paraxial region thereof andan image-side surface 312 being convex in a paraxial region thereof. Thefirst lens element 310 is made of plastic material and has theobject-side surface 311 and the image-side surface 312 being bothaspheric. The object-side surface 311 of the first lens element 310 hasone inflection point. The image-side surface 312 of the first lenselement 310 has one inflection point. The object-side surface 311 of thefirst lens element 310 has one critical point in an off-axis regionthereof. The image-side surface 312 of the first lens element 310 hasone critical point in an off-axis region thereof.

The second lens element 320 with positive refractive power has anobject-side surface 321 being convex in a paraxial region thereof and animage-side surface 322 being concave in a paraxial region thereof. Thesecond lens element 320 is made of plastic material and has theobject-side surface 321 and the image-side surface 322 being bothaspheric.

The third lens element 330 with positive refractive power has anobject-side surface 331 being convex in a paraxial region thereof and animage-side surface 332 being concave in a paraxial region thereof. Thethird lens element 330 is made of plastic material and has theobject-side surface 331 and the image-side surface 332 being bothaspheric. The object-side surface 331 of the third lens element 330 hasone inflection point. The image-side surface 332 of the third lenselement 330 has one inflection point. The object-side surface 331 of thethird lens element 330 has one critical point in an off-axis regionthereof. The image-side surface 332 of the third lens element 330 hasone critical point in an off-axis region thereof.

The fourth lens element 340 with positive refractive power has anobject-side surface 341 being convex in a paraxial region thereof and animage-side surface 342 being convex in a paraxial region thereof. Thefourth lens element 340 is made of plastic material and has theobject-side surface 341 and the image-side surface 342 being bothaspheric. The object-side surface 341 of the fourth lens element 340 hasone inflection point. The image-side surface 342 of the fourth lenselement 340 has one inflection point.

The fifth lens element 350 with negative refractive power has anobject-side surface 351 being concave in a paraxial region thereof andan image-side surface 352 being convex in a paraxial region thereof. Thefifth lens element 350 is made of plastic material and has theobject-side surface 351 and the image-side surface 352 being bothaspheric. The object-side surface 351 of the fifth lens element 350 hasone inflection point. The image-side surface 352 of the fifth lenselement 350 has one inflection point. The image-side surface 352 of thefifth lens element 350 has one critical point in an off-axis regionthereof.

The sixth lens element 360 with positive refractive power has anobject-side surface 361 being concave in a paraxial region thereof andan image-side surface 362 being convex in a paraxial region thereof. Thesixth lens element 360 is made of plastic material and has theobject-side surface 361 and the image-side surface 362 being bothaspheric. The object-side surface 361 of the sixth lens element 360 hasone inflection point. The image-side surface 362 of the sixth lenselement 360 has one inflection point.

The seventh lens element 370 with negative refractive power has anobject-side surface 371 being convex in a paraxial region thereof and animage-side surface 372 being concave in a paraxial region thereof. Theseventh lens element 370 is made of plastic material and has theobject-side surface 371 and the image-side surface 372 being bothaspheric. The object-side surface 371 of the seventh lens element 370has two inflection points. The image-side surface 372 of the seventhlens element 370 has two inflection points. The object-side surface 371of the seventh lens element 370 has one critical point in an off-axisregion thereof. The image-side surface 372 of the seventh lens element370 has one critical point in an off-axis region thereof.

The filter 380 is made of glass material and located between the seventhlens element 370 and the image surface 390, and will not affect thefocal length of the photographing optical lens system. The image sensor395 is disposed on or near the image surface 390 of the photographingoptical lens system.

The detailed optical data of the 3rd embodiment are shown in Table 5 andthe aspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 3.53 mm, Fno = 1.95, HFOV = 52.5 deg. Surface# Curvature Radius Thickness Material Index Abbe # Focal Length  0Object Plano Infinity  1 Lens 1 −5.5635 (ASP) 0.339 Plastic 1.639 23.5−110.86   2 −6.1814 (ASP) 0.314  3 Ape. Stop Plano −0.225   4 Lens 21.9042 (ASP) 0.300 Plastic 1.639 23.5 33.08  5 1.9643 (ASP) 0.254  6Lens 3 10.6055 (ASP) 0.250 Plastic 1.686 18.4 539.01   7 10.8139 (ASP)0.071  8 Stop Plano −0.034   9 Lens 4 7.2038 (ASP) 0.799 Plastic 1.54456.0  3.58 10 −2.5680 (ASP) 0.575 11 Lens 5 −1.4816 (ASP) 0.339 Plastic1.669 19.5 −6.51 12 −2.4512 (ASP) 0.035 13 Lens 6 −4.5032 (ASP) 0.950Plastic 1.544 56.0  2.50 14 −1.1239 (ASP) −0.245  15 Stop Plano 0.517 16Lens 7 3.3261 (ASP) 0.528 Plastic 1.545 56.1 −3.04 17 1.0445 (ASP) 0.61718 Filter Plano 0.210 Glass 1.517 64.2 — 19 Plano 0.725 20 Image Plano —Note: Reference wavelength is 587.6 nm (d-line). An effective radius ofthe stop 301 (Surface 8) is 0.993 mm. An effective radius of the stop302 (Surface 15) is 2.880 mm.

TABLE 6 Aspheric Coefficients Surface # 1 2 4 5 6 k= 0.00000E+00−9.90000E+01 3.65810E−01 0.00000E+00 0.00000E+00 A4= 1.44463900E−011.64545476E−01 −5.00399708E−02 −1.47852781E−01 −2.66085322E−02 A6=−7.87973638E−02 −9.30283447E−02 4.24091683E−02 2.05801658E−014.42509263E−02 A8= 7.16142214E−02 1.80204909E−01 2.10972152E−02−1.84721449E−01 −1.77303509E−01 A10= −5.16080445E−02 −2.15494561E−01−5.37040302E−02 1.15855406E−01 4.85639338E−01 A12= 2.50388300E−021.59306689E−01 7.94717952E−02 2.38445570E−02 −9.41577470E−01 A14=−6.81124134E−03 −4.84675055E−02 −3.16645374E−02 −1.99756371E−029.00694229E−01 A16= 7.19417462E−04 — — — −3.42047181E−01 Surface # 7 910 11 12 k= 0.00000E+00 0.00000E+00 0.00000E+00 −7.23709E−03−4.87597E−02 A4= −5.55892535E−03 −1.24313144E−02 −5.65087604E−02−6.02518045E−02 1.95505859E−01 A6= 3.11770850E−02 3.51738255E−02−6.40373750E−02 −6.41414872E−02 −5.54210318E−01 A8= 4.77898568E−02−3.20358872E−04 1.38114715E−01 3.81722213E−02 5.71114174E−01 A10=−2.26408550E−01 −7.95695924E−02 −2.29018507E−01 1.63119454E−01−2.18076389E−01 A12= 2.09444017E−01 6.66797851E−02 2.32683226E−01−1.88858024E−01 −7.20085211E−02 A14= −7.02966085E−02 −1.53126795E−02−1.29119938E−01 8.59436259E−02 1.22268465E−01 A16= — — 3.02186823E−02−1.45751532E−02 −6.29523851E−02 A18= — — — — 1.74567878E−02 A20= — — — —−2.61911403E−03 A22= — — — — 1.65883431E−04 Surface # 13 14 16 17 — k=0.00000E+00 −1.00000E+00 0.00000E+00 −1.00000E+00 — A4= 2.96842730E−012.16446711E−01 5.25314934E−02 −2.23902038E−01 — A6= −6.31497652E−01−2.55727772E−01 −2.14160819E−01 8.21748246E−02 — A8= 6.78634220E−012.75400212E−01 1.84723330E−01 −2.38253519E−02 — A10= −4.45495278E−01−2.53736905E−01 −9.52653163E−02 5.44140255E−03 — A12= 1.89669152E−011.77285474E−01 3.34169368E−02 −1.00629999E−03 — A14= −5.32650697E−02−8.65025093E−02 −8.29380661E−03 1.50617473E−04 — A16= 9.62450067E−032.86713383E−02 1.47089195E−03 −1.76146133E−05 — A18= −1.01485804E−03−6.30212518E−03 −1.84954238E−04 1.52780144E−06 — A20= 4.70963562E−058.76368940E−04 1.60743615E−05 −9.27775238E−08 — A22= — −6.96158892E−05−9.16574099E−07 3.67354751E−09 — A24= — 2.40287645E−06 3.08046929E−08−8.43284996E−11 — A26= — — −4.61928445E−10 8.44949956E−13 —

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 asthe following values and satisfy the following conditions:

3rd Embodiment f [mm] 3.53 |f/f1| 0.03 Fno 1.95 |f/f1| + |f/f2| + |f/f3|0.15 HFOV [deg.] 52.5 f/f7 −1.16 V1 + V2 + V3 65.4 |f/f123| 0.08 (V3 +V5)/V4 0.68 f/f456 1.49 (V4 + V6 + V7)/(V3 + V5) 4.44 f/R11 + f/R12−3.92 Vmin 18.4 f/R14 3.38 (CT1 + CT2)/T12 7.18 |f1/f4| 30.94 CT1/CT31.36 |f1|/R1 −19.93 CT3/CT4 0.31 f4/f6 1.43 (CT6 + CT7)/T67 5.43 Y11/Y720.38 TL/EPD 3.49 Yc11/Y11 0.45 TL/f 1.79 Yc12/Y12 0.43 TL/ImgH 1.37Yc71/Y71 0.38 (R11 + R12)/(R11 − R12) 1.67 Yc72/Y72 0.60

4th Embodiment

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure. FIG. 8 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 4thembodiment. In FIG. 7, the image capturing unit includes thephotographing optical lens system (its reference numeral is omitted) ofthe present disclosure and an image sensor 495. The photographingoptical lens system includes, in order from an object side to an imageside along an optical path, a first lens element 410, an aperture stop400, a second lens element 420, a third lens element 430, a stop 401, afourth lens element 440, a fifth lens element 450, a stop 402, a sixthlens element 460, a seventh lens element 470, a filter 480 and an imagesurface 490. The photographing optical lens system includes seven lenselements (410, 420, 430, 440, 450, 460 and 470) with no additional lenselement disposed between each of the adjacent seven lens elements.

The first lens element 410 with negative refractive power has anobject-side surface 411 being concave in a paraxial region thereof andan image-side surface 412 being convex in a paraxial region thereof. Thefirst lens element 410 is made of plastic material and has theobject-side surface 411 and the image-side surface 412 being bothaspheric. The object-side surface 411 of the first lens element 410 hasone inflection point. The image-side surface 412 of the first lenselement 410 has one inflection point. The object-side surface 411 of thefirst lens element 410 has one critical point in an off-axis regionthereof. The image-side surface 412 of the first lens element 410 hasone critical point in an off-axis region thereof.

The second lens element 420 with positive refractive power has anobject-side surface 421 being convex in a paraxial region thereof and animage-side surface 422 being concave in a paraxial region thereof. Thesecond lens element 420 is made of plastic material and has theobject-side surface 421 and the image-side surface 422 being bothaspheric.

The third lens element 430 with negative refractive power has anobject-side surface 431 being convex in a paraxial region thereof and animage-side surface 432 being concave in a paraxial region thereof. Thethird lens element 430 is made of plastic material and has theobject-side surface 431 and the image-side surface 432 being bothaspheric. The object-side surface 431 of the third lens element 430 hasone inflection point. The image-side surface 432 of the third lenselement 430 has one inflection point. The object-side surface 431 of thethird lens element 430 has one critical point in an off-axis regionthereof. The image-side surface 432 of the third lens element 430 hasone critical point in an off-axis region thereof.

The fourth lens element 440 with positive refractive power has anobject-side surface 441 being convex in a paraxial region thereof and animage-side surface 442 being convex in a paraxial region thereof. Thefourth lens element 440 is made of plastic material and has theobject-side surface 441 and the image-side surface 442 being bothaspheric. The object-side surface 441 of the fourth lens element 440 hasone inflection point.

The fifth lens element 450 with negative refractive power has anobject-side surface 451 being concave in a paraxial region thereof andan image-side surface 452 being concave in a paraxial region thereof.The fifth lens element 450 is made of plastic material and has theobject-side surface 451 and the image-side surface 452 being bothaspheric. The object-side surface 451 of the fifth lens element 450 hasone inflection point. The image-side surface 452 of the fifth lenselement 450 has two inflection points. The image-side surface 452 of thefifth lens element 450 has one critical point in an off-axis regionthereof.

The sixth lens element 460 with positive refractive power has anobject-side surface 461 being concave in a paraxial region thereof andan image-side surface 462 being convex in a paraxial region thereof. Thesixth lens element 460 is made of plastic material and has theobject-side surface 461 and the image-side surface 462 being bothaspheric. The object-side surface 461 of the sixth lens element 460 hastwo inflection points. The image-side surface 462 of the sixth lenselement 460 has two inflection points. The image-side surface 462 of thesixth lens element 460 has two critical points in an off-axis regionthereof.

The seventh lens element 470 with negative refractive power has anobject-side surface 471 being convex in a paraxial region thereof and animage-side surface 472 being concave in a paraxial region thereof. Theseventh lens element 470 is made of plastic material and has theobject-side surface 471 and the image-side surface 472 being bothaspheric. The object-side surface 471 of the seventh lens element 470has two inflection points. The image-side surface 472 of the seventhlens element 470 has two inflection points. The object-side surface 471of the seventh lens element 470 has one critical point in an off-axisregion thereof. The image-side surface 472 of the seventh lens element470 has one critical point in an off-axis region thereof.

The filter 480 is made of glass material and located between the seventhlens element 470 and the image surface 490, and will not affect thefocal length of the photographing optical lens system. The image sensor495 is disposed on or near the image surface 490 of the photographingoptical lens system.

The detailed optical data of the 4th embodiment are shown in Table 7 andthe aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f = 3.54 mm, Fno = 1.95, HFOV = 52.4 deg. Surface# Curvature Radius Thickness Material Index Abbe # Focal Length  0Object Plano Infinity  1 Lens 1 −3.7195 (ASP) 0.298 Plastic 1.639 23.5−118.17   2 −4.0345 (ASP) 0.474  3 Ape. Stop Plano −0.256   4 Lens 22.2340 (ASP) 0.325 Plastic 1.639 23.5 15.30  5 2.7322 (ASP) 0.244  6Lens 3 5.6394 (ASP) 0.250 Plastic 1.669 19.5 −21.32   7 3.9698 (ASP)0.099  8 Stop Plano −0.067   9 Lens 4 5.5041 (ASP) 0.727 Plastic 1.54456.0  4.84 10 −4.8074 (ASP) 0.158 11 Lens 5 −197.3303 (ASP) 0.310Plastic 1.669 19.5 −15.78  12 11.1577 (ASP) −0.225  13 Stop Plano 0.69814 Lens 6 −3.2291 (ASP) 0.855 Plastic 1.544 56.0  2.57 15 −1.0679 (ASP)0.383 16 Lens 7 3.3875 (ASP) 0.528 Plastic 1.545 56.1 −3.03 17 1.0500(ASP) 1.000 18 Filter Plano 0.210 Glass 1.517 64.2 — 19 Plano 0.290 20Image Plano — Note: Reference wavelength is 587.6 nm (d-line). Aneffective radius of the stop 401 (Surface 8) is 1.050 mm. An effectiveradius of the stop 402 (Surface 13) is 1.441 mm.

TABLE 8 Aspheric Coefficients Surface # 1 2 4 5 6 k= 0.00000E+00−5.96768E+00 2.53996E+00 0.00000E+00 0.00000E+00 A4= 1.49938914E−012.18610610E−01 5.53825880E−02 −1.45611193E−02 −7.16389533E−02 A6=−7.58311979E−02 −1.87834109E−01 −1.41930559E−01 2.55975444E−023.37828593E−02 A8= 4.99635795E−02 2.31788986E−01 2.60589281E−017.05388372E−02 −2.07578396E−01 A10= −2.75154127E−02 −2.17987996E−01−2.90451471E−01 −6.53768692E−02 7.66523037E−01 A12= 1.06916562E−021.36680668E−01 2.00377343E−01 5.65594356E−02 −1.34673820E+00 A14=−2.44009967E−03 −4.81301872E−02 −5.77417550E−02 — 1.16289297E+00 A16=2.37274141E−04 7.04860336E−03 — — −3.98297545E−01 Surface # 7 9 10 11 12k= 0.00000E+00 0.00000E+00 0.00000E+00 9.90000E+01 −9.60470E+01 A4=−1.19819392E−02 6.96820848E−02 −9.32286811E−02 −2.11760988E−01−8.55708426E−02 A6= −2.03711722E−01 −2.10195574E−01 3.63957579E−027.64487744E−03 −5.68898321E−02 A8= 3.77339481E−01 3.04614738E−01−6.39778359E−02 −6.95636728E−02 1.65144512E−01 A10= −4.28502320E−01−2.88928028E−01 2.39290287E−02 6.47477005E−02 −2.87513078E−01 A12=2.90088301E−01 1.75976268E−01 2.42230615E−02 −7.00183120E−023.20402584E−01 A14= −8.52155897E−02 −5.03686409E−02 −2.88616069E−025.92628635E−02 −2.28022720E−01 A16= — — 7.87920362E−03 −1.45293308E−021.00266251E−01 A18= — — — — −2.44836989E−02 A20= — — — — 2.54189388E−03Surface # 14 15 16 17 — k= 0.00000E+00 −1.00000E+00 0.00000E+00−1.00000E+00 — A4= 3.19856003E−02 1.31891870E−01 −3.47435525E−02−2.83184259E−01 — A6= −4.91352443E−02 −1.88461192E−01 −1.41215626E−011.56613871E−01 — A8= 6.10346397E−02 2.09703242E−01 1.97379282E−01−7.23460991E−02 — A10= −3.84952465E−02 −1.83372744E−01 −1.52864228E−012.60654740E−02 — A12= 1.14574687E−02 1.30010009E−01 7.86220867E−02−7.27785322E−03 — A14= −6.26874728E−04 −7.19426082E−02 −2.84101949E−021.57547916E−03 — A16= −3.63428858E−04 3.01495125E−02 7.40364776E−03−2.63806106E−04 — A18= 5.19186902E−05 −8.88956452E−03 −1.40889890E−033.38944429E−05 — A20= — 1.67681915E−03 1.96195664E−04 −3.29414491E−06 —A22= — −1.78407960E−04 −1.98021292E−05 2.36871977E−07 — A24= —8.08791240E−06 1.41178691E−06 −1.21710405E−08 — A26= — — −6.74698157E−084.21399061E−10 — A28= — — 1.94014744E−09 −8.78664519E−12 — A30= — —−2.53787569E−11 8.31630917E−14 —

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 asthe following values and satisfy the following conditions:

4th Embodiment f [mm] 3.54 |f/f1| 0.03 Fno 1.95 |f/f1| + |f/f2| + |f/f3|0.43 HFOV [deg.] 52.4 f/f7 −1.17 V1 + V2 + V3 66.4 |f/f123| 0.05 (V3 +V5)/V4 0.69 f/f456 1.50 (V4 + V6 + V7)/(V3 + V5) 4.32 f/R11 + f/R12−4.41 Vmin 19.5 f/R14 3.37 (CT1 + CT2)/T12 2.86 |f1/f4| 24.43 CT1/CT31.19 |f1|/R1 −31.77 CT3/CT4 0.34 f4/f6 1.88 (CT6 + CT7)/T67 3.61 Y11/Y720.45 TL/EPD 3.47 Yc11/Y11 0.51 TL/f 1.78 Yc12/Y12 0.48 TL/ImgH 1.37Yc71/Y71 0.36 (R11 + R12)/(R11 − R12) 1.99 Yc72/Y72 0.59

5th Embodiment

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure. FIG. 10 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 5thembodiment. In FIG. 9, the image capturing unit includes thephotographing optical lens system (its reference numeral is omitted) ofthe present disclosure and an image sensor 595. The photographingoptical lens system includes, in order from an object side to an imageside along an optical path, a first lens element 510, an aperture stop500, a second lens element 520, a third lens element 530, a stop 501, afourth lens element 540, a fifth lens element 550, a sixth lens element560, a seventh lens element 570, a filter 580 and an image surface 590.The photographing optical lens system includes seven lens elements (510,520, 530, 540, 550, 560 and 570) with no additional lens elementdisposed between each of the adjacent seven lens elements.

The first lens element 510 with positive refractive power has anobject-side surface 511 being concave in a paraxial region thereof andan image-side surface 512 being convex in a paraxial region thereof. Thefirst lens element 510 is made of plastic material and has theobject-side surface 511 and the image-side surface 512 being bothaspheric. The object-side surface 511 of the first lens element 510 hastwo inflection points. The image-side surface 512 of the first lenselement 510 has two inflection points. The object-side surface 511 ofthe first lens element 510 has one critical point in an off-axis regionthereof. The image-side surface 512 of the first lens element 510 hasone critical point in an off-axis region thereof.

The second lens element 520 with positive refractive power has anobject-side surface 521 being convex in a paraxial region thereof and animage-side surface 522 being concave in a paraxial region thereof. Thesecond lens element 520 is made of plastic material and has theobject-side surface 521 and the image-side surface 522 being bothaspheric.

The third lens element 530 with negative refractive power has anobject-side surface 531 being concave in a paraxial region thereof andan image-side surface 532 being convex in a paraxial region thereof. Thethird lens element 530 is made of plastic material and has theobject-side surface 531 and the image-side surface 532 being bothaspheric. The image-side surface 532 of the third lens element 530 hastwo inflection points. The image-side surface 532 of the third lenselement 530 has two critical points in an off-axis region thereof.

The fourth lens element 540 with positive refractive power has anobject-side surface 541 being concave in a paraxial region thereof andan image-side surface 542 being convex in a paraxial region thereof. Thefourth lens element 540 is made of glass material and has theobject-side surface 541 and the image-side surface 542 being bothaspheric. The object-side surface 541 of the fourth lens element 540 hastwo inflection points. The object-side surface 541 of the fourth lenselement 540 has two critical points in an off-axis region thereof.

The fifth lens element 550 with negative refractive power has anobject-side surface 551 being convex in a paraxial region thereof and animage-side surface 552 being concave in a paraxial region thereof. Thefifth lens element 550 is made of plastic material and has theobject-side surface 551 and the image-side surface 552 being bothaspheric. The object-side surface 551 of the fifth lens element 550 hastwo inflection points. The image-side surface 552 of the fifth lenselement 550 has two inflection points. The object-side surface 551 ofthe fifth lens element 550 has one critical point in an off-axis regionthereof. The image-side surface 552 of the fifth lens element 550 hastwo critical points in an off-axis region thereof.

The sixth lens element 560 with positive refractive power has anobject-side surface 561 being concave in a paraxial region thereof andan image-side surface 562 being convex in a paraxial region thereof. Thesixth lens element 560 is made of plastic material and has theobject-side surface 561 and the image-side surface 562 being bothaspheric. The object-side surface 561 of the sixth lens element 560 hasone inflection point. The image-side surface 562 of the sixth lenselement 560 has one inflection point. The image-side surface 562 of thesixth lens element 560 has one critical point in an off-axis regionthereof.

The seventh lens element 570 with negative refractive power has anobject-side surface 571 being convex in a paraxial region thereof and animage-side surface 572 being concave in a paraxial region thereof. Theseventh lens element 570 is made of plastic material and has theobject-side surface 571 and the image-side surface 572 being bothaspheric. The object-side surface 571 of the seventh lens element 570has two inflection points. The image-side surface 572 of the seventhlens element 570 has one inflection point. The object-side surface 571of the seventh lens element 570 has one critical point in an off-axisregion thereof. The image-side surface 572 of the seventh lens element570 has one critical point in an off-axis region thereof.

The filter 580 is made of glass material and located between the seventhlens element 570 and the image surface 590, and will not affect thefocal length of the photographing optical lens system. The image sensor595 is disposed on or near the image surface 590 of the photographingoptical lens system.

The detailed optical data of the 5th embodiment are shown in Table 9 andthe aspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 3.84 mm, Fno = 1.92, HFOV = 50.0 deg. Surface# Curvature Radius Thickness Material Index Abbe # Focal Length  0Object Plano Infinity  1 Lens 1 −4.2166 (ASP) 0.341 Plastic 1.566 37.4206.56   2 −4.1888 (ASP) 0.547  3 Ape. Stop Plano −0.320   4 Lens 22.2151 (ASP) 0.373 Plastic 1.566 37.4 12.92  5 2.9843 (ASP) 0.366  6Lens 3 −27.6664 (ASP) 0.220 Plastic 1.679 18.4 −47.07   7 −206.1856(ASP) 0.003  8 Stop Plano 0.027  9 Lens 4 −180.8318 (ASP) 0.700 Glass1.566 61.1  5.68 10 −3.1629 (ASP) 0.292 11 Lens 5 15.8585 (ASP) 0.264Plastic 1.679 18.4 −24.30  12 8.0328 (ASP) 0.636 13 Lens 6 −3.8947 (ASP)0.737 Plastic 1.544 56.0  3.20 14 −1.2821 (ASP) 0.312 15 Lens 7 3.4755(ASP) 0.570 Plastic 1.544 56.0 −2.98 16 1.0414 (ASP) 1.000 17 FilterPlano 0.210 Glass 1.517 64.2 — 18 Plano 0.190 19 Image Plano — Note:Reference wavelength is 587.6 nm (d-line). An effective radius of thestop 501 (Surface 8) is 1.050 mm.

TABLE 10 Aspheric Coefficients Surface # 1 2 4 5 6 k= 0.00000E+00−9.57881E−01 2.15250E+00 0.00000E+00 0.00000E+00 A4= 1.38010507E−012.40994001E−01 1.04780763E−01 2.42297742E−02 −3.19494798E−02 A6=−6.80092561E−02 −2.15320777E−01 −2.17127858E−01 −3.03344450E−02−8.79144122E−02 A8= 3.45080416E−02 2.09461148E−01 3.17786815E−011.13348552E−01 9.23493023E−02 A10= −1.31326653E−02 −1.54528656E−01−3.17995563E−01 −1.11183741E−01 −1.27421438E−02 A12= 3.49612213E−037.62324711E−02 1.92870137E−01 6.54348258E−02 −4.70056439E−02 A14=−5.49285429E−04 −2.14160058E−02 −5.00643393E−02 — 3.02972102E−02 A16=3.41492887E−05 2.48167153E−03 — — −3.43559106E−03 Surface # 7 9 10 11 12k= 0.00000E+00 0.00000E+00 0.00000E+00 8.61752E+01 −1.85121E+01 A4=1.02884362E−01 1.50564776E−01 −6.17901012E−02 −1.47272824E−01−7.87880802E−02 A6= −3.70870885E−01 −3.63115509E−01 −1.90609751E−02−6.45801451E−02 −7.75507433E−02 A8= 4.28991067E−01 4.02208652E−017.50506166E−02 1.27338606E−01 1.65416544E−01 A10= −2.11049924E−01−2.09509402E−01 −1.42383746E−01 −1.50587729E−01 −2.02837948E−01 A12=2.24156434E−02 3.31175703E−02 1.31047910E−01 9.06017600E−021.57812583E−01 A14= 8.23993374E−03 4.30641164E−03 −5.98919469E−02−1.99322716E−02 −7.80141990E−02 A16= — — 1.06669848E−02 5.68914914E−042.38382869E−02 A18= — — — — −3.92959325E−03 A20= — — — — 2.50160707E−04Surface # 13 14 15 16 — k= 0.00000E+00 −9.01682E−01 0.00000E+00−1.00941E+00 — A4= 3.48854961E−02 8.67985923E−02 −1.57144546E−01−3.44486225E−01 — A6= −7.52068965E−02 −1.25394778E−01 −5.42592735E−022.18792470E−01 — A8= 7.07918821E−02 1.30444012E−01 1.57646965E−01−1.13221366E−01 — A10= −3.76607092E−02 −9.24864627E−02 −1.38584844E−014.51046791E−02 — A12= 1.15485760E−02 4.63109801E−02 7.42037452E−02−1.36058572E−02 — A14= −1.99563024E−03 −1.53550025E−02 −2.71511507E−023.08500556E−03 — A16= 1.84056678E−04 3.30770902E−03 7.07460022E−03−5.23729187E−04 — A18= −7.33347267E−06 −4.61990551E−04 −1.33439934E−036.62480486E−05 — A20= — 4.11578969E−05 1.82691191E−04 −6.18691352E−06 —A22= — −2.18534578E−06 −1.79834130E−05 4.19357623E−07 — A24= —5.40681553E−08 1.24101390E−06 −2.00097351E−08 — A26= — — −5.70316520E−086.36040183E−10 — A28= — — 1.56891715E−09 −1.20737768E−11 — A30= — —−1.95634512E−11 1.03444175E−13 —

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10as the following values and satisfy the following conditions:

5th Embodiment f [mm] 3.84 |f/f1| 0.02 Fno 1.92 |f/f1| + |f/f2| + |f/f3|0.40 HFOV [deg.] 50.0 f/f7 −1.29 V1 + V2 + V3 93.3 |f/f123| 0.25 (V3 +V5)/V4 0.60 f/f456 1.42 (V4 + V6 + V7)/(V3 + V5) 4.69 f/R11 + f/R12−3.98 Vmin 18.4 f/R14 3.69 (CT1 + CT2)/T12 3.15 |f1/f4| 36.36 CT1/CT31.55 |f1|/R1 −48.99 CT3/CT4 0.31 f4/f6 1.78 (CT6 + CT7)/T67 4.19 Y11/Y720.49 TL/EPD 3.23 Yc11/Y11 0.46 TL/f 1.68 Yc12/Y12 0.41 TL/ImgH 1.40Yc71/Y71 0.23 (R11 + R12)/(R11 − R12) 1.98 Yc72/Y72 0.54

6th Embodiment

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure. FIG. 12 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 6thembodiment. In FIG. 11, the image capturing unit includes thephotographing optical lens system (its reference numeral is omitted) ofthe present disclosure and an image sensor 695. The photographingoptical lens system includes, in order from an object side to an imageside along an optical path, a first lens element 610, an aperture stop600, a second lens element 620, a third lens element 630, a stop 601, afourth lens element 640, a fifth lens element 650, a stop 602, a sixthlens element 660, a seventh lens element 670, a filter 680 and an imagesurface 690. The photographing optical lens system includes seven lenselements (610, 620, 630, 640, 650, 660 and 670) with no additional lenselement disposed between each of the adjacent seven lens elements.

The first lens element 610 with negative refractive power has anobject-side surface 611 being concave in a paraxial region thereof andan image-side surface 612 being convex in a paraxial region thereof. Thefirst lens element 610 is made of plastic material and has theobject-side surface 611 and the image-side surface 612 being bothaspheric. The object-side surface 611 of the first lens element 610 hasone inflection point. The image-side surface 612 of the first lenselement 610 has one inflection point. The object-side surface 611 of thefirst lens element 610 has one critical point in an off-axis regionthereof. The image-side surface 612 of the first lens element 610 hasone critical point in an off-axis region thereof.

The second lens element 620 with positive refractive power has anobject-side surface 621 being convex in a paraxial region thereof and animage-side surface 622 being concave in a paraxial region thereof. Thesecond lens element 620 is made of plastic material and has theobject-side surface 621 and the image-side surface 622 being bothaspheric.

The third lens element 630 with negative refractive power has anobject-side surface 631 being convex in a paraxial region thereof and animage-side surface 632 being concave in a paraxial region thereof. Thethird lens element 630 is made of plastic material and has theobject-side surface 631 and the image-side surface 632 being bothaspheric. The object-side surface 631 of the third lens element 630 hasone inflection point. The image-side surface 632 of the third lenselement 630 has two inflection points. The object-side surface 631 ofthe third lens element 630 has one critical point in an off-axis regionthereof.

The fourth lens element 640 with positive refractive power has anobject-side surface 641 being convex in a paraxial region thereof and animage-side surface 642 being convex in a paraxial region thereof. Thefourth lens element 640 is made of plastic material and has theobject-side surface 641 and the image-side surface 642 being bothaspheric. The object-side surface 641 of the fourth lens element 640 hasone inflection point.

The fifth lens element 650 with positive refractive power has anobject-side surface 651 being convex in a paraxial region thereof and animage-side surface 652 being concave in a paraxial region thereof. Thefifth lens element 650 is made of plastic material and has theobject-side surface 651 and the image-side surface 652 being bothaspheric. The object-side surface 651 of the fifth lens element 650 hastwo inflection points. The image-side surface 652 of the fifth lenselement 650 has two inflection points. The object-side surface 651 ofthe fifth lens element 650 has one critical point in an off-axis regionthereof. The image-side surface 652 of the fifth lens element 650 hasone critical point in an off-axis region thereof.

The sixth lens element 660 with positive refractive power has anobject-side surface 661 being concave in a paraxial region thereof andan image-side surface 662 being convex in a paraxial region thereof. Thesixth lens element 660 is made of plastic material and has theobject-side surface 661 and the image-side surface 662 being bothaspheric. The object-side surface 661 of the sixth lens element 660 hasone inflection point. The image-side surface 662 of the sixth lenselement 660 has one inflection point.

The seventh lens element 670 with negative refractive power has anobject-side surface 671 being convex in a paraxial region thereof and animage-side surface 672 being concave in a paraxial region thereof. Theseventh lens element 670 is made of plastic material and has theobject-side surface 671 and the image-side surface 672 being bothaspheric. The object-side surface 671 of the seventh lens element 670has two inflection points. The image-side surface 672 of the seventhlens element 670 has two inflection points. The object-side surface 671of the seventh lens element 670 has one critical point in an off-axisregion thereof. The image-side surface 672 of the seventh lens element670 has one critical point in an off-axis region thereof.

The filter 680 is made of glass material and located between the seventhlens element 670 and the image surface 690, and will not affect thefocal length of the photographing optical lens system. The image sensor695 is disposed on or near the image surface 690 of the photographingoptical lens system.

The detailed optical data of the 6th embodiment are shown in Table 11and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 3.45 mm, Fno = 1.96, HFOV = 53.0 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length 0 Object Plano Infinity  1 Lens 1 −4.2492 (ASP) 0.504 Plastic 1.52958.0 −25.11   2 −6.5043 (ASP) 0.874  3 Ape. Stop Plano −0.282   4 Lens 22.0712 (ASP) 0.389 Plastic 1.566 37.4  7.37  5 3.8332 (ASP) 0.248  6Lens 3 7.6033 (ASP) 0.220 Plastic 1.701 14.8 −18.70   7 4.7550 (ASP)0.082  8 Stop Plano −0.049   9 Lens 4 7.5531 (ASP) 0.661 Plastic 1.52958.0  5.99 10 −5.2944 (ASP) 0.168 11 Lens 5 7.1046 (ASP) 0.250 Plastic1.686 18.4 112.09  12 7.7157 (ASP) −0.230  13 Stop Plano 0.772 14 Lens 6−2.5990 (ASP) 0.747 Plastic 1.529 58.0  2.89 15 −1.0573 (ASP) 0.235 16Lens 7 3.2238 (ASP) 0.532 Plastic 1.529 58.0 −2.90 17 0.9793 (ASP) 1.00018 Filter Plano 0.210 Glass 1.517 64.2 — 19 Plano 0.214 20 Image Plano —Note: Reference wavelength is 587.6 nm (d-line). An effective radius ofthe stop 601 (Surface 8) is 1.050 mm. An effective radius of the stop602 (Surface 13) is 1.394 mm.

TABLE 12 Aspheric Coefficients Surface # 1 2 4 5 6 k= 0.00000E+008.62061E+00 1.71556E+00 0.00000E+00 0.00000E+00 A4= 8.28315017E−021.25395368E−01 3.45065217E−02 2.54896658E−02 −7.45586889E−02 A6=−2.60688637E−02 −4.82482286E−02 −2.93169119E−02 9.42825109E−03−2.34405933E−02 A8= 9.56968924E−03 3.56903446E−02 4.46071249E−021.48906163E−02 2.22303405E−02 A10= −2.76784567E−03 −2.06644882E−02−5.04868921E−02 −1.42816571E−02 5.75968348E−02 A12= 5.45589592E−048.34511377E−03 3.75772393E−02 2.75045381E−02 −2.40398036E−01 A14=−6.17533184E−05 −1.86968108E−03 −6.92216258E−03 — 3.06425059E−01 A16=2.91228434E−06 1.62041908E−04 — — −1.29368952E−01 Surface # 7 9 10 11 12k= 0.00000E+00 0.00000E+00 0.00000E+00 −9.00000E+01 −4.23225E+01 A4=−5.21969815E−02 3.05168882E−02 −1.32049621E−01 −1.65735522E−01−5.72715516E−02 A6= −2.95839545E−02 −3.34661776E−02 6.35092453E−02−1.07599265E−01 −1.66893017E−01 A8= −7.72591179E−02 −1.20830072E−01−4.46335225E−02 1.18658101E−01 3.43764531E−01 A10= 1.67820005E−012.48837670E−01 −5.34412711E−02 −1.74977490E−01 −5.20845157E−01 A12=−8.43447776E−02 −1.47180948E−01 1.25314846E−01 8.23422638E−025.18891219E−01 A14= 1.07317515E−02 2.44164014E−02 −8.20266230E−022.24572176E−02 −3.28529694E−01 A16= — — 1.73435197E−02 −1.37844000E−021.25320881E−01 A18= — — — — −2.51530314E−02 A20= — — — — 1.98774876E−03Surface # 14 15 16 17 — k= 0.00000E+00 −9.60232E−01 0.00000E+00−1.01866E+00 — A4= 1.97354023E−02 1.38542542E−01 −1.00528874E−01−3.70008341E−01 — A6= −8.51387834E−02 −2.44886881E−01 −1.73155884E−012.38126375E−01 — A8= 7.67181629E−02 2.29207217E−01 3.05841519E−01−1.23453655E−01 — A10= 2.81902110E−05 −9.27448681E−02 −2.55239620E−014.89478015E−02 — A12= −3.62571566E−02 −4.00336874E−02 1.35736727E−01−1.45635136E−02 — A14= 2.07985814E−02 7.69416597E−02 −4.98790863E−023.20814863E−03 — A16= −4.62312690E−03 −4.53147819E−02 1.31107639E−02−5.17059555E−04 — A18= 3.68094519E−04 1.42678957E−02 −2.50345810E−036.00272720E−05 — A20= — −2.56703073E−03 3.48340531E−04 −4.88970315E−06 —A22= — 2.49326773E−04 −3.50029476E−05 2.65862561E−07 — A24= —−1.01612399E−05 2.47729044E−06 −8.62549564E−09 — A26= — —−1.17297418E−07 1.11700092E−10 — A28= — — 3.33903942E−09 1.67032319E−12— A30= — — −4.32494593E−11 −5.34564043E−14 —

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12as the following values and satisfy the following conditions:

6th Embodiment f [mm] 3.45 |f/f1| 0.14 Fno 1.96 |f/f1| + |f/f2| + |f/f3|0.79 HFOV [deg.] 53.0 f/f7 −1.19 V1 + V2 + V3 110.2 |f/f123| 0.18 (V3 +V5)/V4 0.57 f/f456 1.43 (V4 + V6 + V7)/(V3 + V5) 5.24 f/R11 + f/R12−4.59 Vmin 14.8 f/R14 3.52 (CT1 + CT2)/T12 1.51 |f1/f4| 4.19 CT1/CT32.29 |f1|/R1 −5.91 CT3/CT4 0.33 f4/f6 2.08 (CT6 + CT7)/T67 5.44 Y11/Y720.62 TL/EPD 3.72 Yc11/Y11 0.48 TL/f 1.90 Yc12/Y12 0.39 TL/ImgH 1.42Yc71/Y71 0.26 (R11 + R12)/(R11 − R12) 2.37 Yc72/Y72 0.55

7th Embodiment

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure. FIG. 14 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 7thembodiment. In FIG. 13, the image capturing unit includes thephotographing optical lens system (its reference numeral is omitted) ofthe present disclosure and an image sensor 795. The photographingoptical lens system includes, in order from an object side to an imageside along an optical path, a first lens element 710, an aperture stop700, a second lens element 720, a third lens element 730, a stop 701, afourth lens element 740, a fifth lens element 750, a sixth lens element760, a seventh lens element 770, a filter 780 and an image surface 790.The photographing optical lens system includes seven lens elements (710,720, 730, 740, 750, 760 and 770) with no additional lens elementdisposed between each of the adjacent seven lens elements.

The first lens element 710 with positive refractive power has anobject-side surface 711 being concave in a paraxial region thereof andan image-side surface 712 being convex in a paraxial region thereof. Thefirst lens element 710 is made of plastic material and has theobject-side surface 711 and the image-side surface 712 being bothaspheric. The object-side surface 711 of the first lens element 710 hasone inflection point. The image-side surface 712 of the first lenselement 710 has one inflection point. The object-side surface 711 of thefirst lens element 710 has one critical point in an off-axis regionthereof. The image-side surface 712 of the first lens element 710 hasone critical point in an off-axis region thereof.

The second lens element 720 with negative refractive power has anobject-side surface 721 being convex in a paraxial region thereof and animage-side surface 722 being concave in a paraxial region thereof. Thesecond lens element 720 is made of plastic material and has theobject-side surface 721 and the image-side surface 722 being bothaspheric.

The third lens element 730 with positive refractive power has anobject-side surface 731 being convex in a paraxial region thereof and animage-side surface 732 being concave in a paraxial region thereof. Thethird lens element 730 is made of plastic material and has theobject-side surface 731 and the image-side surface 732 being bothaspheric. The object-side surface 731 of the third lens element 730 hasone inflection point. The image-side surface 732 of the third lenselement 730 has one inflection point. The object-side surface 731 of thethird lens element 730 has one critical point in an off-axis regionthereof. The image-side surface 732 of the third lens element 730 hasone critical point in an off-axis region thereof.

The fourth lens element 740 with positive refractive power has anobject-side surface 741 being convex in a paraxial region thereof and animage-side surface 742 being convex in a paraxial region thereof. Thefourth lens element 740 is made of plastic material and has theobject-side surface 741 and the image-side surface 742 being bothaspheric. The object-side surface 741 of the fourth lens element 740 hasone inflection point.

The fifth lens element 750 with negative refractive power has anobject-side surface 751 being concave in a paraxial region thereof andan image-side surface 752 being concave in a paraxial region thereof.The fifth lens element 750 is made of plastic material and has theobject-side surface 751 and the image-side surface 752 being bothaspheric. The object-side surface 751 of the fifth lens element 750 hasone inflection point. The image-side surface 752 of the fifth lenselement 750 has two inflection points. The image-side surface 752 of thefifth lens element 750 has one critical point in an off-axis regionthereof.

The sixth lens element 760 with positive refractive power has anobject-side surface 761 being concave in a paraxial region thereof andan image-side surface 762 being convex in a paraxial region thereof. Thesixth lens element 760 is made of plastic material and has theobject-side surface 761 and the image-side surface 762 being bothaspheric. The object-side surface 761 of the sixth lens element 760 hasone inflection point. The image-side surface 762 of the sixth lenselement 760 has one inflection point.

The seventh lens element 770 with negative refractive power has anobject-side surface 771 being convex in a paraxial region thereof and animage-side surface 772 being concave in a paraxial region thereof. Theseventh lens element 770 is made of plastic material and has theobject-side surface 771 and the image-side surface 772 being bothaspheric. The object-side surface 771 of the seventh lens element 770has two inflection points. The image-side surface 772 of the seventhlens element 770 has two inflection points. The object-side surface 771of the seventh lens element 770 has one critical point in an off-axisregion thereof. The image-side surface 772 of the seventh lens element770 has one critical point in an off-axis region thereof.

The filter 780 is made of glass material and located between the seventhlens element 770 and the image surface 790, and will not affect thefocal length of the photographing optical lens system. The image sensor795 is disposed on or near the image surface 790 of the photographingoptical lens system.

The detailed optical data of the 7th embodiment are shown in Table 13and the aspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f = 3.58 mm, Fno = 1.89, HFOV = 52.0 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length 0 Object Plano Infinity  1 Lens 1 −6.6194 (ASP) 0.515 Plastic 1.56637.4 33.22  2 −5.0335 (ASP) 0.429  3 Ape. Stop Plano −0.284   4 Lens 22.3978 (ASP) 0.322 Plastic 1.562 44.6 −388.92   5 2.2572 (ASP) 0.258  6Lens 3 4.5386 (ASP) 0.220 Plastic 1.679 18.4 173.74   7 4.6276 (ASP)0.076  8 Stop Plano −0.042   9 Lens 4 7.7948 (ASP) 0.727 Plastic 1.54456.0  4.48 10 −3.4260 (ASP) 0.146 11 Lens 5 −172.0823 (ASP) 0.250Plastic 1.679 18.4 −11.21  12 7.9702 (ASP) 0.604 13 Lens 6 −4.2096 (ASP)0.809 Plastic 1.544 56.0  2.67 14 −1.1519 (ASP) 0.265 15 Lens 7 3.1496(ASP) 0.569 Plastic 1.544 56.0 −2.90 16 0.9846 (ASP) 1.000 17 FilterPlano 0.210 Glass 1.517 64.2 — 18 Plano 0.256 19 Image Plano — Note:Reference wavelength is 587.6 nm (d-line). An effective radius of thestop 701 (Surface 8) is 1.050 mm.

TABLE 14 Aspheric Coefficients Surface # 1 2 4 5 6 k= 0.00000E+00−1.13148E+01 2.58141E+00 0.00000E+00 0.00000E+00 A4= 8.73043323E−022.71568147E−01 1.62421896E−01 −2.39206434E−02 −4.60781861E−02 A6=−2.73368266E−02 −3.23147398E−01 −3.46034934E−01 8.47563398E−03−1.03704362E−02 A8= 1.02043638E−02 4.43927629E−01 5.31296724E−015.66802410E−02 −1.15751284E−01 A10= −2.96792841E−03 −4.27825602E−01−5.17153408E−01 −4.55555625E−02 4.19695084E−01 A12= 6.88628915E−042.65888649E−01 2.95329569E−01 3.00227861E−02 −6.53701435E−01 A14=−9.73237265E−05 −9.10671347E−02 −7.16973108E−02 — 4.84774725E−01 A16=3.60184366E−06 1.29933597E−02 — — −1.42556705E−01 Surface # 7 9 10 11 12k= 0.00000E+00 0.00000E+00 0.00000E+00 9.00000E+01 −6.03481E+01 A4=8.81851886E−03 7.35261561E−02 −9.90509508E−02 −2.48095040E−01−1.34326956E−01 A6= −1.39397336E−01 −1.16919873E−01 6.81458685E−026.65455708E−02 8.46136980E−03 A8= 7.65601332E−02 1.62451237E−02−5.01960114E−02 4.93722672E−02 1.40003345E−01 A10= 2.98018535E−029.57417569E−02 −3.52235497E−02 −2.03540157E−01 −2.81180110E−01 A12=−4.88640324E−02 −7.50170166E−02 7.12808394E−02 1.77886618E−012.88562451E−01 A14= 1.32383550E−02 1.57691197E−02 −3.67951851E−02−5.47839994E−02 −1.78453995E−01 A16= — — 6.23173884E−03 4.99729803E−036.76281427E−02 A18= — — — — −1.43345208E−02 A20= — — — — 1.30213338E−03Surface # 13 14 15 16 — k= 0.00000E+00 −9.59006E−01 0.00000E+00−1.00754E+00 — A4= 2.11337440E−02 1.18498613E−01 −1.17514685E−01−3.63547577E−01 — A6= −6.53019576E−02 −1.63638015E−01 −7.60309041E−022.47565714E−01 — A8= 6.72422241E−02 1.56496618E−01 1.60296638E−01−1.40999727E−01 — A10= −3.68679189E−02 −9.59191371E−02 −1.34530080E−016.22894310E−02 — A12= 1.19948863E−02 3.36222665E−02 7.08453774E−02−2.08008010E−02 — A14= −2.40203937E−03 −2.47384391E−03 −2.58378144E−025.19763013E−03 — A16= 2.88738004E−04 −2.67387020E−03 6.79290059E−03−9.68221510E−04 — A18= −1.63867566E−05 1.09570776E−03 −1.31216043E−031.33960034E−04 — A20= — −1.92461510E−04 1.87388174E−04 −1.36565573E−05 —A22= — 1.66853975E−05 −1.96492625E−05 1.00936847E−06 — A24= —−5.82166396E−07 1.47646140E−06 −5.24915916E−08 — A26= — —−7.54386152E−08 1.81802353E−09 — A28= — — 2.34959095E−09 −3.75891108E−11— A30= — — −3.36527927E−11 3.50508294E−13 —

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14as the following values and satisfy the following conditions:

7th Embodiment f [mm] 3.58 |f/f1| 0.11 Fno 1.89 |f/f1| + |f/f2| + |f/f3|0.14 HFOV [deg.] 52.0 f/f7 −1.23 V1 + V2 + V3 100.5 |f/f123| 0.13 (V3 +V5)/V4 0.66 f/f456 1.48 (V4 + V6 + V7)/(V3 + V5) 4.55 f/R11 + f/R12−3.96 Vmin 18.4 f/R14 3.64 (CT1 + CT2)/T12 5.77 |f1/f4| 7.42 CT1/CT32.34 |f1|/R1 −5.02 CT3/CT4 0.30 f4/f6 1.68 (CT6 + CT7)/T67 5.20 Y11/Y720.49 TL/EPD 3.34 Yc11/Y11 0.43 TL/f 1.77 Yc12/Y12 0.40 TL/ImgH 1.37Yc71/Y71 0.30 (R11 + R12)/(R11 − R12) 1.75 Yc72/Y72 0.58

8th Embodiment

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure. FIG. 16 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 8thembodiment. In FIG. 15, the image capturing unit includes thephotographing optical lens system (its reference numeral is omitted) ofthe present disclosure and an image sensor 895. The photographingoptical lens system includes, in order from an object side to an imageside along an optical path, a first lens element 810, an aperture stop800, a second lens element 820, a third lens element 830, a stop 801, afourth lens element 840, a fifth lens element 850, a sixth lens element860, a seventh lens element 870, a filter 880 and an image surface 890.The photographing optical lens system includes seven lens elements (810,820, 830, 840, 850, 860 and 870) with no additional lens elementdisposed between each of the adjacent seven lens elements.

The first lens element 810 with positive refractive power has anobject-side surface 811 being concave in a paraxial region thereof andan image-side surface 812 being convex in a paraxial region thereof. Thefirst lens element 810 is made of plastic material and has theobject-side surface 811 and the image-side surface 812 being bothaspheric. The object-side surface 811 of the first lens element 810 hasone inflection point. The image-side surface 812 of the first lenselement 810 has one inflection point. The object-side surface 811 of thefirst lens element 810 has one critical point in an off-axis regionthereof. The image-side surface 812 of the first lens element 810 hasone critical point in an off-axis region thereof.

The second lens element 820 with positive refractive power has anobject-side surface 821 being convex in a paraxial region thereof and animage-side surface 822 being concave in a paraxial region thereof. Thesecond lens element 820 is made of plastic material and has theobject-side surface 821 and the image-side surface 822 being bothaspheric.

The third lens element 830 with positive refractive power has anobject-side surface 831 being convex in a paraxial region thereof and animage-side surface 832 being concave in a paraxial region thereof. Thethird lens element 830 is made of plastic material and has theobject-side surface 831 and the image-side surface 832 being bothaspheric. The object-side surface 831 of the third lens element 830 hasone inflection point. The image-side surface 832 of the third lenselement 830 has one inflection point. The object-side surface 831 of thethird lens element 830 has one critical point in an off-axis regionthereof. The image-side surface 832 of the third lens element 830 hasone critical point in an off-axis region thereof.

The fourth lens element 840 with positive refractive power has anobject-side surface 841 being convex in a paraxial region thereof and animage-side surface 842 being convex in a paraxial region thereof. Thefourth lens element 840 is made of plastic material and has theobject-side surface 841 and the image-side surface 842 being bothaspheric. The object-side surface 841 of the fourth lens element 840 hasone inflection point.

The fifth lens element 850 with negative refractive power has anobject-side surface 851 being concave in a paraxial region thereof andan image-side surface 852 being concave in a paraxial region thereof.The fifth lens element 850 is made of plastic material and has theobject-side surface 851 and the image-side surface 852 being bothaspheric. The object-side surface 851 of the fifth lens element 850 hasone inflection point. The image-side surface 852 of the fifth lenselement 850 has two inflection points. The image-side surface 852 of thefifth lens element 850 has two critical points in an off-axis regionthereof.

The sixth lens element 860 with positive refractive power has anobject-side surface 861 being concave in a paraxial region thereof andan image-side surface 862 being convex in a paraxial region thereof. Thesixth lens element 860 is made of plastic material and has theobject-side surface 861 and the image-side surface 862 being bothaspheric. The object-side surface 861 of the sixth lens element 860 hasone inflection point. The image-side surface 862 of the sixth lenselement 860 has three inflection points.

The seventh lens element 870 with negative refractive power has anobject-side surface 871 being convex in a paraxial region thereof and animage-side surface 872 being concave in a paraxial region thereof. Theseventh lens element 870 is made of plastic material and has theobject-side surface 871 and the image-side surface 872 being bothaspheric. The object-side surface 871 of the seventh lens element 870has two inflection points. The image-side surface 872 of the seventhlens element 870 has two inflection points. The object-side surface 871of the seventh lens element 870 has one critical point in an off-axisregion thereof. The image-side surface 872 of the seventh lens element870 has one critical point in an off-axis region thereof.

The filter 880 is made of glass material and located between the seventhlens element 870 and the image surface 890, and will not affect thefocal length of the photographing optical lens system. The image sensor895 is disposed on or near the image surface 890 of the photographingoptical lens system.

The detailed optical data of the 8th embodiment are shown in Table 15and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f = 3.33 mm, Fno = 1.99, HFOV = 54.0 deg.Surface # Curvature Radius Thickness Material Index Abbe # Focal Length 0 Object Plano Infinity  1 Lens 1 −3.2236 (ASP) 0.486 Plastic 1.54556.1 97.75  2 −3.2013 (ASP) 0.729  3 Ape. Stop Plano −0.242   4 Lens 22.1063 (ASP) 0.300 Plastic 1.562 44.6 16.32  5 2.5943 (ASP) 0.232  6Lens 3 4.2056 (ASP) 0.220 Plastic 1.679 18.4 428.31   7 4.1770 (ASP)0.103  8 Stop Plano −0.056   9 Lens 4 9.5478 (ASP) 0.727 Plastic 1.54456.0  5.12 10 −3.8225 (ASP) 0.145 11 Lens 5 −22.9385 (ASP) 0.250 Plastic1.679 18.4 −16.13  12 21.0756 (ASP) 0.513 13 Lens 6 −2.9750 (ASP) 0.689Plastic 1.544 56.0  2.65 14 −1.0505 (ASP) 0.222 15 Lens 7 3.2532 (ASP)0.500 Plastic 1.544 56.0 −2.89 16 1.0036 (ASP) 1.000 17 Filter Plano0.210 Glass 1.517 64.2 — 18 Plano 0.216 19 Image Plano — Note: Referencewavelength is 587.6 nm (d-line). An effective radius of the stop 801(Surface 8) is 1.050 mm.

TABLE 16 Aspheric Coefficients Surface # 1 2 4 5 6 k= 0.00000E+001.68687E+00 2.23524E+00 0.00000E+00 0.00000E+00 A4= 8.09760544E−021.40103759E−01 7.10649157E−02 6.41449286E−02 −2.49947216E−02 A6=−2.15012850E−02 −6.12097616E−02 −7.50436243E−02 −4.14405502E−02−4.80014025E−02 A8= 7.11478818E−03 4.16471240E−02 6.05097757E−021.00322188E−01 −3.85824871E−02 A10= −1.89131966E−03 −2.09242800E−02−2.10193867E−02 −7.49263346E−02 1.59307916E−01 A12= 3.57442043E−047.20298586E−03 3.92711699E−04 4.94134996E−02 −2.58302484E−01 A14=−3.91604481E−05 −1.41553637E−03 1.68546123E−03 — 2.12411228E−01 A16=1.88207692E−06 1.26429720E−04 — — −7.33877785E−02 Surface # 7 9 10 11 12k= 0.00000E+00 0.00000E+00 0.00000E+00 −5.17446E+01 6.05016E+01 A4=5.91336766E−03 4.49747242E−02 −1.41811398E−01 −2.96635107E−01−1.58197934E−01 A6= −6.12975791E−02 7.36943499E−04 1.68314776E−013.06143840E−01 1.26697391E−01 A8= −3.87755623E−02 −1.08289143E−01−3.15996212E−01 −6.12992299E−01 −9.03060403E−02 A10= 5.72240987E−021.36754708E−01 3.39159252E−01 6.79015118E−01 −7.14956167E−02 A12=−6.44355469E−03 −5.08482977E−02 −1.83576086E−01 −4.49845530E−012.09636647E−01 A14= −8.32743331E−03 2.36975177E−04 3.95247761E−021.72489215E−01 −1.94578846E−01 A16= — — −1.09718134E−03 −2.69895775E−029.22961162E−02 A18= — — — — −2.16158343E−02 A20= — — — — 1.95203515E−03Surface # 13 14 15 16 — k= 0.00000E+00 −9.83763E−01 0.00000E+00−1.00196E+00 — A4= 7.96079291E−03 1.91527060E−01 −3.53500321E−02−3.22139571E−01 — A6= −5.86586170E−02 −3.70157090E−01 −2.38815707E−011.69683388E−01 — A8= 9.90967683E−02 4.90618639E−01 3.24380057E−01−6.73652856E−02 — A10= −6.41278832E−02 −4.55366805E−01 −2.34860671E−011.75060358E−02 — A12= 1.88505482E−02 3.02179428E−01 1.09966305E−01−1.91836528E−03 — A14= −2.17179457E−03 −1.35868799E−01 −3.55423286E−02−5.13524044E−04 — A16= −2.11724934E−05 4.04279955E−02 8.18663139E−032.88937839E−04 — A18= 1.49605457E−05 −7.83145626E−03 −1.36493080E−03−6.81562688E−05 — A20= — 9.50229705E−04 1.65414307E−04 9.96066496E−06 —A22= — −6.56069307E−05 −1.44688136E−05 −9.67265467E−07 — A24= —1.96645335E−06 8.93706871E−07 6.26221431E−08 — A26= — — −3.71933559E−08−2.60121842E−09 — A28= — — 9.42384656E−10 6.27465425E−11 — A30= — —−1.10674105E−11 −6.68293723E−13 —

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16as the following values and satisfy the following conditions:

8th Embodiment f [mm] 3.33 |f/f1| 0.03 Fno 1.99 |f/f1| + |f/f2| + |f/f3|0.25 HFOV [deg.] 54.0 f/f7 −1.15 V1 + V2 + V3 119.1 |f/f123| 0.26 (V3 +V5)/V4 0.66 f/f456 1.42 (V4 + V6 + V7)/(V3 + V5) 4.55 f/R11 + f/R12−4.30 Vmin 18.4 f/R14 3.32 (CT1 + CT2)/T12 1.61 |f1/f4| 19.11 CT1/CT32.21 |f1|/R1 −30.32 CT3/CT4 0.30 f4/f6 1.93 (CT6 + CT7)/T67 5.36 Y11/Y720.64 TL/EPD 3.73 Yc11/Y11 0.58 TL/f 1.87 Yc12/Y12 0.58 TL/ImgH 1.36Yc71/Y71 0.29 (R11 + R12)/(R11 − R12) 2.09 Yc72/Y72 0.55

9th Embodiment

FIG. 17 is a perspective view of an image capturing unit according tothe 9th embodiment of the present disclosure. In this embodiment, animage capturing unit 10 is a camera module including a lens unit 11, adriving device 12, an image sensor 13 and an image stabilizer 14. Thelens unit 11 includes the photographing optical lens system disclosed inthe 1st embodiment, a barrel and a holder member (their referencenumerals are omitted) for holding the photographing optical lens system.However, the lens unit 11 may alternatively be provided with thephotographing optical lens system disclosed in other embodiments of thepresent disclosure, and the present disclosure is not limited thereto.The imaging light converges in the lens unit 11 of the image capturingunit 10 to generate an image with the driving device 12 utilized forimage focusing on the image sensor 13, and the generated image is thendigitally transmitted to other electronic component for furtherprocessing.

The driving device 12 can have auto focusing functionality, anddifferent driving configurations can be obtained through the usages ofvoice coil motors (VCM), micro electro-mechanical systems (MEMS),piezoelectric systems, or shape memory alloy materials. The drivingdevice 12 is favorable for obtaining a better imaging position of thelens unit 11, so that a clear image of the imaged object can be capturedby the lens unit 11 with different object distances. The image sensor 13(for example, CCD or CMOS), which can feature high photosensitivity andlow noise, is disposed on the image surface of the photographing opticallens system to provide higher image quality.

The image stabilizer 14, such as an accelerometer, a gyro sensor and aHall Effect sensor, is configured to work with the driving device 12 toprovide optical image stabilization (OIS). The driving device 12 workingwith the image stabilizer 14 is favorable for compensating for pan andtilt of the lens unit 11 to reduce blurring associated with motionduring exposure. In some cases, the compensation can be provided byelectronic image stabilization (EIS) with image processing software,thereby improving image quality while in motion or low-light conditions.

10th Embodiment

FIG. 18 is one perspective view of an electronic device according to the10th embodiment of the present disclosure. FIG. 19 is anotherperspective view of the electronic device in FIG. 18. FIG. 20 is a blockdiagram of the electronic device in FIG. 18.

In this embodiment, an electronic device 20 is a smartphone includingthe image capturing unit 10 disclosed in the 9th embodiment, an imagecapturing unit 10 a, an image capturing unit 10 b, an image capturingunit 10 c, an image capturing unit 10 d, a flash module 21, a focusassist module 22, an image signal processor 23, a display module (userinterface) 24 and an image software processor 25. The image capturingunit 10 and the image capturing unit 10 a are disposed on the same sideof the electronic device 20 and each of the image capturing units 10 and10 a has a single focal point. The image capturing unit 10 b, the imagecapturing unit 10 c, the image capturing unit 10 d and the displaymodule 24 are disposed on the opposite side of the electronic device 20,such that the image capturing units 10 b, 10 c, 10 d can be front-facingcameras of the electronic device 20 for taking selfies, but the presentdisclosure is not limited thereto. Furthermore, each of the imagecapturing units 10 a, 10 b, 10 c and 10 d can include the photographingoptical lens system of the present disclosure and can have aconfiguration similar to that of the image capturing unit 10. In detail,each of the image capturing units 10 a, 10 b, 10 c and 10 d can includea lens unit, a driving device, an image sensor and an image stabilizer,and each of the lens unit can include an optical lens assembly such asthe photographing optical lens system of the present disclosure, abarrel and a holder member for holding the optical lens assembly.

The image capturing unit 10 is a wide-angle image capturing unit, theimage capturing unit 10 a is an ultra-wide-angle image capturing unit,the image capturing unit 10 b is a wide-angle image capturing unit, theimage capturing unit 10 c is an ultra-wide-angle image capturing unit,and the image capturing unit 10 d is a ToF (time of flight) imagecapturing unit. In this embodiment, the image capturing units 10, 10 a,10 b and 10 c have different fields of view, such that the electronicdevice 20 can have various magnification ratios so as to meet therequirement of optical zoom functionality. In addition, the imagecapturing unit 10 d can determine depth information of the imagedobject. In this embodiment, the electronic device 20 includes multipleimage capturing units 10, 10 a, 10 b, 10 c and 10 d, but the presentdisclosure is not limited to the number and arrangement of imagecapturing units.

When a user captures images of an object 26, the light rays converge inthe image capturing unit 10 or the image capturing unit 10 a to generateimages, and the flash module 21 is activated for light supplement. Thefocus assist module 22 detects the object distance of the imaged object26 to achieve fast auto focusing. The image signal processor 23 isconfigured to optimize the captured image to improve image quality. Thelight beam emitted from the focus assist module 22 can be eitherconventional infrared or laser. In addition, the light rays may convergein the image capturing unit 10 b, 10 c or 10 d to generate images. Thedisplay module 24 can include a touch screen, and the user is able tointeract with the display module 24 and the image software processor 25having multiple functions to capture images and complete imageprocessing. Alternatively, the user may capture images via a physicalbutton. The image processed by the image software processor 25 can bedisplayed on the display module 24.

11th Embodiment

FIG. 21 is one perspective view of an electronic device according to the11th embodiment of the present disclosure.

In this embodiment, an electronic device 30 is a smartphone includingthe image capturing unit 10 disclosed in the 9th embodiment, an imagecapturing unit 10 e, an image capturing unit 10 f, a flash module 31, afocus assist module, an image signal processor, a display module and animage software processor (not shown). The image capturing unit 10, theimage capturing unit 10 e and the image capturing unit 10 f are disposedon the same side of the electronic device 30, while the display moduleis disposed on the opposite side of the electronic device 30.Furthermore, each of the image capturing units 10 e and 10 f can includethe photographing optical lens system of the present disclosure and canhave a configuration similar to that of the image capturing unit 10, sothe details in this regard will not be provided again.

The image capturing unit 10 is a wide-angle image capturing unit, theimage capturing unit 10 e is a telephoto image capturing unit, and theimage capturing unit 10 f is an ultra-wide-angle image capturing unit.In this embodiment, the image capturing units 10, 10 e and 10 f havedifferent fields of view, such that the electronic device 30 can havevarious magnification ratios so as to meet the requirement of opticalzoom functionality. Moreover, the image capturing unit 10 e can be atelephoto image capturing unit having a light-folding elementconfiguration, such that the total track length of the image capturingunit 10 e is not limited by the thickness of the electronic device 30.Moreover, the light-folding element configuration of the image capturingunit 10 e can be similar to, for example, one of the structures shown inFIG. 24 to FIG. 26 which can be referred to foregoing descriptionscorresponding to FIG. 24 to FIG. 26 so the details in this regard willnot be provided again. In this embodiment, the electronic device 30includes multiple image capturing units 10, 10 e and 10 f, but thepresent disclosure is not limited to the number and arrangement of imagecapturing units. When a user captures images of an object, light raysconverge in the image capturing unit 10, 10 e or 10 f to generateimages, and the flash module 31 is activated for light supplement.Further, the subsequent processes are performed in a manner similar tothe abovementioned embodiment, so the details in this regard will not beprovided again.

12th Embodiment

FIG. 22 is one perspective view of an electronic device according to the12th embodiment of the present disclosure.

In this embodiment, an electronic device 40 is a smartphone includingthe image capturing unit 10 disclosed in the 9th embodiment, an imagecapturing unit 10 g, an image capturing unit 10 h, an image capturingunit 10 i, an image capturing unit 10 j, an image capturing unit 10 k,an image capturing unit 10 m, an image capturing unit 10 n, an imagecapturing unit 10 p, a flash module 41, a focus assist module, an imagesignal processor, a display module and an image software processor (notshown). The image capturing units 10, 10 g, 10 h, 10 i, 10 j, 10 k, 10m, 10 n and 10 p are disposed on the same side of the electronic device40, while the display module is disposed on the opposite side of theelectronic device 40. Furthermore, each of the image capturing units 10g, 10 h, 10 i, 10 j, 10 k, 10 m, 10 n and 10 p can include thephotographing optical lens system of the present disclosure and can havea configuration similar to that of the image capturing unit 10, so thedetails in this regard will not be provided again.

The image capturing unit 10 is a wide-angle image capturing unit, theimage capturing unit 10 g is a telephoto image capturing unit, the imagecapturing unit 10 h is a telephoto image capturing unit, the imagecapturing unit 10 i is a wide-angle image capturing unit, the imagecapturing unit 10 j is an ultra-wide-angle image capturing unit, theimage capturing unit 10 k is an ultra-wide-angle image capturing unit,the image capturing unit 10 m is a telephoto image capturing unit, theimage capturing unit 10 n is a telephoto image capturing unit, and theimage capturing unit 10 p is a ToF image capturing unit. In thisembodiment, the image capturing units 10, 10 g, 10 h, 10 i, 10 j, 10 k,10 m and 10 n have different fields of view, such that the electronicdevice 40 can have various magnification ratios so as to meet therequirement of optical zoom functionality. Moreover, each of the imagecapturing units 10 g and 10 h can be a telephoto image capturing unithaving a light-folding element configuration. Moreover, thelight-folding element configuration of each of the image capturing unit10 g and 10 h can be similar to, for example, one of the structuresshown in FIG. 24 to FIG. 26 which can be referred to foregoingdescriptions corresponding to FIG. 24 to FIG. 26 so the details in thisregard will not be provided again. In addition, the image capturing unit10 p can determine depth information of the imaged object. In thisembodiment, the electronic device 40 includes multiple image capturingunits 10, 10 g, 10 h, 10 i, 10 j, 10 k, 10 m, 10 n and 10 p, but thepresent disclosure is not limited to the number and arrangement of imagecapturing units. When a user captures images of an object, the lightrays converge in the image capturing unit 10, 10 g, 10 h, 10 i, 10 j, 10k, 10 m, 10 n or 10 p to generate images, and the flash module 41 isactivated for light supplement. Further, the subsequent processes areperformed in a manner similar to the abovementioned embodiments, so thedetails in this regard will not be provided again.

The smartphone in this embodiment is only exemplary for showing theimage capturing unit 10 of the present disclosure installed in anelectronic device, and the present disclosure is not limited thereto.The image capturing unit 10 can be optionally applied to optical systemswith a movable focus. Furthermore, the photographing optical lens systemof the image capturing unit 10 features good capability in aberrationcorrections and high image quality, and can be applied to 3D(three-dimensional) image capturing applications, in products such asdigital cameras, mobile devices, digital tablets, smart televisions,network surveillance devices, dashboard cameras, vehicle backup cameras,multi-camera devices, image recognition systems, motion sensing inputdevices, wearable devices and other electronic imaging devices.

The foregoing description, for the purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-16 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. A photographing optical lens system comprisingseven lens elements, the seven lens elements being, in order from anobject side to an image side along an optical path, a first lenselement, a second lens element, a third lens element, a fourth lenselement, a fifth lens element, a sixth lens element and a seventh lenselement, and each of the seven lens elements having an object-sidesurface facing toward the object side and an image-side surface facingtoward the image side; wherein the object-side surface of the first lenselement is concave in a paraxial region thereof, the sixth lens elementhas positive refractive power, the object-side surface of the sixth lenselement is concave in a paraxial region thereof, the image-side surfaceof the sixth lens element is convex in a paraxial region thereof, and atleast one of the object-side surface and the image-side surface of atleast one lens element of the photographing optical lens system has atleast one inflection point; wherein an Abbe number of the third lenselement is V3, an Abbe number of the fourth lens element is V4, an Abbenumber of the fifth lens element is V5, an axial distance between theobject-side surface of the first lens element and an image surface isTL, an entrance pupil diameter of the photographing optical lens systemis EPD, a maximum image height of the photographing optical lens systemis ImgH, and the following conditions are satisfied:0.30<(V3+V5)/V4<1.2;1.0<TL/EPD<6.0; and0.80<TL/ImgH<1.8.
 2. The photographing optical lens system of claim 1,wherein the Abbe number of the third lens element is V3, the Abbe numberof the fourth lens element is V4, the Abbe number of the fifth lenselement is V5, an Abbe number of the sixth lens element is V6, an Abbenumber of the seventh lens element is V7, and the following conditionsare satisfied:0.40<(V3+V5)/V4<1.0; and4.0<(V4+V6+V7)/(V3+V5)<6.0.
 3. The photographing optical lens system ofclaim 1, wherein the axial distance between the object-side surface ofthe first lens element and the image surface is TL, the entrance pupildiameter of the photographing optical lens system is EPD, the maximumimage height of the photographing optical lens system is ImgH, a maximumeffective radius of the object-side surface of the first lens element isY11, a maximum effective radius of the image-side surface of the seventhlens element is Y72, and the following conditions are satisfied:2.0<TL/EPD<5.0;1.0<TL/ImgH<1.6; and0.30<Y11/Y72<0.75.
 4. The photographing optical lens system of claim 1,wherein a minimum value among Abbe numbers of all lens elements of thephotographing optical lens system is Vmin, a focal length of thephotographing optical lens system is f, a focal length of the first lenselement is f1, a focal length of the second lens element is f2, a focallength of the third lens element is f3, and the following conditions aresatisfied:10.0<Vmin<20.0; and|f/f1|+|f/f2|+|f/f3|<1.0.
 5. The photographing optical lens system ofclaim 1, wherein a central thickness of the first lens element is CT1, acentral thickness of the third lens element is CT3, a central thicknessof the fourth lens element is CT4, and the following conditions aresatisfied:0.90<CT1/CT3<2.8; and0.15<CT3/CT4<0.60.
 6. The photographing optical lens system of claim 1,wherein the object-side surface of the second lens element is convex ina paraxial region thereof, and the image-side surface of the second lenselement is concave in a paraxial region thereof; wherein a verticaldistance between a critical point on the object-side surface of thefirst lens element and an optical axis is Yc11, a maximum effectiveradius of the object-side surface of the first lens element is Y11, andthe object-side surface of the first lens element has at least onecritical point in an off-axis region thereof satisfying the followingcondition:0.15<Yc11/Y11<0.75.
 7. The photographing optical lens system of claim 1,wherein the fourth lens element has positive refractive power, and theimage-side surface of the fourth lens element is convex in a paraxialregion thereof; wherein a focal length of the fourth lens element is f4,a focal length of the sixth lens element is f6, and the followingcondition is satisfied:1.3<f4/f6<2.5.
 8. The photographing optical lens system of claim 1,wherein the seventh lens element has negative refractive power, and theimage-side surface of the seventh lens element is concave in a paraxialregion thereof; wherein a vertical distance between a critical point onthe image-side surface of the seventh lens element and an optical axisis Yc72, a maximum effective radius of the image-side surface of theseventh lens element is Y72, and the image-side surface of the seventhlens element has at least one critical point in an off-axis regionthereof satisfying the following condition:0.35<Yc72/Y72<0.80.
 9. The photographing optical lens system of claim 1,wherein the image-side surface of the seventh lens element is concave ina paraxial region thereof; wherein a focal length of the photographingoptical lens system is f, a curvature radius of the object-side surfaceof the sixth lens element is R11, a curvature radius of the image-sidesurface of the sixth lens element is R12, a curvature radius of theimage-side surface of the seventh lens element is R14, and the followingconditions are satisfied:−7.5<f/R11+f/R12<−1.5; and3.0<f/R14<4.0.
 10. An image capturing unit, comprising: thephotographing optical lens system of claim 1; and an image sensordisposed on the image surface of the photographing optical lens system.11. An electronic device, comprising: the image capturing unit of claim10.
 12. A photographing optical lens system comprising seven lenselements, the seven lens elements being, in order from an object side toan image side along an optical path, a first lens element, a second lenselement, a third lens element, a fourth lens element, a fifth lenselement, a sixth lens element and a seventh lens element, and each ofthe seven lens elements having an object-side surface facing toward theobject side and an image-side surface facing toward the image side;wherein the object-side surface of the first lens element is concave ina paraxial region thereof, the image-side surface of the first lenselement is convex in a paraxial region thereof, the sixth lens elementhas positive refractive power, the object-side surface of the sixth lenselement is concave in a paraxial region thereof, the image-side surfaceof the sixth lens element is convex in a paraxial region thereof, theimage-side surface of the seventh lens element is concave in a paraxialregion thereof, and at least one of the object-side surface and theimage-side surface of at least one lens element of the photographingoptical lens system has at least one inflection point; wherein an Abbenumber of the third lens element is V3, an Abbe number of the fourthlens element is V4, an Abbe number of the fifth lens element is V5, anaxial distance between an object-side surface of the first lens elementand an image surface is TL, an entrance pupil diameter of thephotographing optical lens system is EPD, and the following conditionsare satisfied:0.30<(V3+V5)/V4<1.2; and1.0<TL/EPD<6.0.
 13. The photographing optical lens system of claim 12,wherein the Abbe number of the third lens element is V3, the Abbe numberof the fourth lens element is V4, the Abbe number of the fifth lenselement is V5, and the following condition is satisfied:0.40<(V3+V5)/V4<1.0.
 14. The photographing optical lens system of claim12, wherein the axial distance between the object-side surface of thefirst lens element and the image surface is TL, the entrance pupildiameter of the photographing optical lens system is EPD, a focal lengthof the photographing optical lens system is f, and the followingconditions are satisfied:2.0<TL/EPD<5.0; and1.2<TL/f<2.5.
 15. The photographing optical lens system of claim 12,wherein an Abbe number of the first lens element is V1, an Abbe numberof the second lens element is V2, the Abbe number of the third lenselement is V3, a focal length of the photographing optical lens systemis f, a composite focal length of the first lens element, the secondlens element and the third lens element is f123, and the followingconditions are satisfied:40.0<V1+V2+V3<125.0; and|f/f123|<0.40.
 16. The photographing optical lens system of claim 12,wherein a focal length of the first lens element is f1, a curvatureradius of the object-side surface of the first lens element is R1, andthe following condition is satisfied:|f1|/R1<−2.5.
 17. The photographing optical lens system of claim 12,wherein the fourth lens element has positive refractive power, and theseventh lens element has negative refractive power; wherein a verticaldistance between a critical point on the image-side surface of the firstlens element and an optical axis is Yc12, a maximum effective radius ofthe image-side surface of the first lens element is Y12, the image-sidesurface of the first lens element has at least one critical point in anoff-axis region thereof satisfying the following condition:0.20<Yc12/Y12<0.75.
 18. The photographing optical lens system of claim12, wherein at least one of the object-side surface and the image-sidesurface of each of at least two lens elements of the photographingoptical lens system has at least one inflection point; wherein a centralthickness of the first lens element is CT1, a central thickness of thesecond lens element is CT2, an axial distance between the first lenselement and the second lens element is T12, and the following conditionis satisfied:0.80<(CT1+CT2)/T12<12.
 19. A photographing optical lens systemcomprising seven lens elements, the seven lens elements being, in orderfrom an object side to an image side along an optical path, a first lenselement, a second lens element, a third lens element, a fourth lenselement, a fifth lens element, a sixth lens element and a seventh lenselement, and each of the seven lens elements having an object-sidesurface facing toward the object side and an image-side surface facingtoward the image side; wherein the object-side surface of the secondlens element is convex in a paraxial region thereof, the image-sidesurface of the second lens element is concave in a paraxial regionthereof, the image-side surface of the fourth lens element is convex ina paraxial region thereof, the object-side surface of the sixth lenselement is concave in a paraxial region thereof, the image-side surfaceof the sixth lens element is convex in a paraxial region thereof, theseventh lens element has negative refractive power, and at least one ofthe object-side surface and the image-side surface of at least one lenselement of the photographing optical lens system has at least oneinflection point; wherein an Abbe number of the third lens element isV3, an Abbe number of the fourth lens element is V4, an Abbe number ofthe fifth lens element is V5, a central thickness of the sixth lenselement is CT6, a central thickness of the seventh lens element is CT7,an axial distance between the sixth lens element and the seventh lenselement is T67, a focal length of the first lens element is f1, a focallength of the fourth lens element is f4, and the following conditionsare satisfied:0.40<(V3+V5)/V4<1.0;1.5<(CT6+CT7)/T67<13; and2.2<|f1/f4|.
 20. The photographing optical lens system of claim 19,wherein the Abbe number of the third lens element is V3, the Abbe numberof the fourth lens element is V4, the Abbe number of the fifth lenselement is V5, half of a maximum field of view of the photographingoptical lens system is HFOV, an f-number of the photographing opticallens system is Fno, and the following conditions are satisfied:0.50<(V3+V5)/V4<0.80;42.5 degrees<HFOV<65.0 degrees; and1.2<Fno<2.0.
 21. The photographing optical lens system of claim 19,wherein the central thickness of the sixth lens element is CT6, thecentral thickness of the seventh lens element is CT7, the axial distancebetween the sixth lens element and the seventh lens element is T67, thefocal length of the first lens element is f1, the focal length of thefourth lens element is f4, and the following conditions are satisfied:2.0<(CT6+CT7)/T67<10; and3.0<|f1/f4|.
 22. The photographing optical lens system of claim 19,wherein a focal length of the photographing optical lens system is f,the focal length of the first lens element is f1, a focal length of theseventh lens element is f7, a maximum effective radius of theobject-side surface of the first lens element is Y11, a maximumeffective radius of the image-side surface of the seventh lens elementis Y72, and the following conditions are satisfied:|f/f1|<0.45;−1.8<f/f7<−0.70; and0.25<Y11/Y72<0.90.
 23. The photographing optical lens system of claim19, wherein the fourth lens element has positive refractive power, andthe sixth lens element has positive refractive power; wherein a focallength of the photographing optical lens system is f, a composite focallength of the fourth lens element, the fifth lens element and the sixthlens element is f456, and the following condition is satisfied:1.2<f/f456<1.8.
 24. The photographing optical lens system of claim 19,wherein the object-side surface of the seventh lens element is convex ina paraxial region thereof, and the image-side surface of the seventhlens element is concave in a paraxial region thereof; wherein a verticaldistance between a critical point on the object-side surface of theseventh lens element and an optical axis is Yc71, a maximum effectiveradius of the object-side surface of the seventh lens element is Y71,the object-side surface of the seventh lens element has at least onecritical point in an off-axis region thereof satisfying the followingcondition:0.10<Yc71/Y71<0.50.
 25. The photographing optical lens system of claim19, wherein at least one of the object-side surface and the image-sidesurface of at least one lens element of the photographing optical lenssystem has at least one critical point in an off-axis region thereof;wherein a curvature radius of the object-side surface of the sixth lenselement is R11, a curvature radius of the image-side surface of thesixth lens element is R12, and the following condition is satisfied:1.3<(R11+R12)/(R11−R12)<4.0.